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סקירה כללית
הסדרת הגרף היא טכניקה ספציפית תחת הפרדיגמה הרחבה של עצבי גרף למידה ( בוי et al., 2018 ). הרעיון המרכזי הוא להכשיר מודלים של רשתות עצביות עם מטרה מסודרת בגרף, תוך שימוש בנתונים מסומנים וגם ללא תווית.
במדריך זה, נחקור את השימוש בהסדרת גרפים כדי לסווג מסמכים היוצרים גרף טבעי (אורגני).
המתכון הכללי ליצירת מודל מוסדר גרף באמצעות המסגרת של למידה מובנית עצבית (NSL) הוא כדלקמן:
- צור נתוני אימון מגרף הקלט ותכונות לדוגמה. צמתים בגרף מתאימים לדגימות והקצוות בגרף מתאימים לדמיון בין זוגות דגימות. נתוני האימון שיתקבלו יכילו תכונות שכנות בנוסף לתכונות הצומת המקוריות.
- צור רשת עצבית כמודל בסיס באמצעות
Kerasהרציף, הפונקציונלי, או API תת. - עוטף את דגם הבסיס עם
GraphRegularizationמעמד המעטפת, אשר מסופק על ידי מסגרת NSL, כדי ליצור גרף חדשKerasמודל. מודל חדש זה יכלול אובדן הסדרת גרף כמונח ההסדרה ביעד ההכשרה שלו. - רכבת ולהעריך את הגרף
Kerasמודל.
להכין
התקן את חבילת הלמידה המובנית העצבית.
pip install --quiet neural-structured-learning
תלות ויבוא
import neural_structured_learning as nsl
import tensorflow as tf
# Resets notebook state
tf.keras.backend.clear_session()
print("Version: ", tf.__version__)
print("Eager mode: ", tf.executing_eagerly())
print(
"GPU is",
"available" if tf.config.list_physical_devices("GPU") else "NOT AVAILABLE")
Version: 2.8.0-rc0 Eager mode: True GPU is NOT AVAILABLE 2022-01-05 12:39:27.704660: E tensorflow/stream_executor/cuda/cuda_driver.cc:271] failed call to cuInit: CUDA_ERROR_NO_DEVICE: no CUDA-capable device is detected
מערך נתונים של Cora
במערך קורה הוא גרף הציטוט שבו הצמתים מייצגים ניירות למידת מכונה וקצוות מייצגים ציטוטים בין זוגות של ניירות. המשימה הכרוכה היא סיווג מסמכים כאשר המטרה היא לסווג כל מאמר לאחת מ-7 קטגוריות. במילים אחרות, מדובר בבעיית סיווג רב מחלקות עם 7 מחלקות.
גרָף
הגרף המקורי מכוון. עם זאת, לצורך דוגמה זו, אנו רואים את הגרסה הבלתי מכוונת של גרף זה. לכן, אם מאמר א' מצטט את מאמר ב', אנו מחשיבים את המאמר ב' כמצוטט את א'. למרות שזה לא בהכרח נכון, בדוגמה זו, אנו רואים ציטוטים בתור פרוקסי לדמיון, שהוא בדרך כלל תכונה קומוטטיבית.
מאפיינים
כל נייר בקלט מכיל למעשה 2 תכונות:
מילים: צפוף, רב-חם שקית-של-מילים ייצוג של הטקסט בעיתון. אוצר המילים עבור מערך הנתונים של Cora מכיל 1433 מילים ייחודיות. אז, אורכה של תכונה זו הוא 1433, והערך במיקום 'i' הוא 0/1 המציין אם המילה 'i' באוצר המילים קיימת במאמר הנתון או לא.
לייבל: שלם בודד המייצג את הזהות בכיתה (קטגוריה) של נייר.
הורד את מערך הנתונים של Cora
wget --quiet -P /tmp https://linqs-data.soe.ucsc.edu/public/lbc/cora.tgztar -C /tmp -xvzf /tmp/cora.tgz
cora/ cora/README cora/cora.cites cora/cora.content
המר את נתוני Cora לפורמט NSL
כדי preprocess במערך קורה ולהמיר אותו לפורמט הנדרש על ידי למידה Structured עצבית, נוכל להריץ את הסקריפט "preprocess_cora_dataset.py", אשר נכלל במאגר NSL GitHub. הסקריפט הזה עושה את הפעולות הבאות:
- צור תכונות שכנות באמצעות תכונות הצומת המקוריות והגרף.
- צור פיצולי נתוני הרכבת מבחן המכילים
tf.train.Exampleמקרים. - נמשך הרכבת שהתקבלה נתון בדיקה של
TFRecordהפורמט.
!wget https://raw.githubusercontent.com/tensorflow/neural-structured-learning/master/neural_structured_learning/examples/preprocess/cora/preprocess_cora_dataset.py
!python preprocess_cora_dataset.py \
--input_cora_content=/tmp/cora/cora.content \
--input_cora_graph=/tmp/cora/cora.cites \
--max_nbrs=5 \
--output_train_data=/tmp/cora/train_merged_examples.tfr \
--output_test_data=/tmp/cora/test_examples.tfr
--2022-01-05 12:39:28-- https://raw.githubusercontent.com/tensorflow/neural-structured-learning/master/neural_structured_learning/examples/preprocess/cora/preprocess_cora_dataset.py Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.108.133, 185.199.109.133, 185.199.110.133, ... Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|185.199.108.133|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 11640 (11K) [text/plain] Saving to: ‘preprocess_cora_dataset.py’ preprocess_cora_dat 100%[===================>] 11.37K --.-KB/s in 0s 2022-01-05 12:39:28 (78.9 MB/s) - ‘preprocess_cora_dataset.py’ saved [11640/11640] 2022-01-05 12:39:31.378912: E tensorflow/stream_executor/cuda/cuda_driver.cc:271] failed call to cuInit: CUDA_ERROR_NO_DEVICE: no CUDA-capable device is detected Reading graph file: /tmp/cora/cora.cites... Done reading 5429 edges from: /tmp/cora/cora.cites (0.01 seconds). Making all edges bi-directional... Done (0.01 seconds). Total graph nodes: 2708 Joining seed and neighbor tf.train.Examples with graph edges... Done creating and writing 2155 merged tf.train.Examples (1.36 seconds). Out-degree histogram: [(1, 386), (2, 468), (3, 452), (4, 309), (5, 540)] Output training data written to TFRecord file: /tmp/cora/train_merged_examples.tfr. Output test data written to TFRecord file: /tmp/cora/test_examples.tfr. Total running time: 0.04 minutes.
משתנים גלובליים
שבילי קובץ נתון הרכבת ולבדוק מבוסס על ערכי סימון שורת פקוד המשמשים להפעיל את התסריט "preprocess_cora_dataset.py" לעיל.
### Experiment dataset
TRAIN_DATA_PATH = '/tmp/cora/train_merged_examples.tfr'
TEST_DATA_PATH = '/tmp/cora/test_examples.tfr'
### Constants used to identify neighbor features in the input.
NBR_FEATURE_PREFIX = 'NL_nbr_'
NBR_WEIGHT_SUFFIX = '_weight'
היפרפרמטרים
נשתמש מופע של HParams לכלול hyperparameters וקבועים שונים שימשו לאימונים והערכה. אנו מתארים בקצרה כל אחד מהם להלן:
num_classes: ישנם סוגים שונים 7 סה"כ
max_seq_length: זהו הגודל של אוצר המילים ואת כל המופעים בקלט יש ייצוג רב-חם, שקית-של-מילים צפופה. במילים אחרות, ערך 1 למילה מציין שהמילה קיימת בקלט וערך 0 מציין שלא.
DISTANCE_TYPE: זהו המרחק מטרי המשמש להסדרת המדגם עם שכנותיה.
graph_regularization_multiplier: זו קובעת את המשקל היחסי של המונח להסדרת גרף פונקצית ההפסד הכולל.
num_neighbors: מספר שכנים משמשים להסדרת גרף. יש ערך זה להיות קטן או שווה ל
max_nbrsשורת הפקודה טיעון בשימוש מעל בעת הפעלתpreprocess_cora_dataset.py.num_fc_units: מספר השכבות מחוברות באופן מלא ברשת העצבית שלנו.
train_epochs: מספר תקופות האימונים.
גודל יצווה שמש לאימונים והערכה: batch_size.
dropout_rate: בקרת שיעור הנשירה בעקבות כל שכבה מחוברת באופן מלא
eval_steps: מספר אצוות כדי תהליך לפני רואה סיום בדיקה. אם מוגדר
None, כל המופעים בערכת בדיקה מוערכים.
class HParams(object):
"""Hyperparameters used for training."""
def __init__(self):
### dataset parameters
self.num_classes = 7
self.max_seq_length = 1433
### neural graph learning parameters
self.distance_type = nsl.configs.DistanceType.L2
self.graph_regularization_multiplier = 0.1
self.num_neighbors = 1
### model architecture
self.num_fc_units = [50, 50]
### training parameters
self.train_epochs = 100
self.batch_size = 128
self.dropout_rate = 0.5
### eval parameters
self.eval_steps = None # All instances in the test set are evaluated.
HPARAMS = HParams()
טען נתוני רכבת ובדיקה
כפי שתואר קודם לכן במחברת זו, נתון הכשרת מבחן קלט נוצרו על ידי "preprocess_cora_dataset.py". אנו נטען אותם לשתי tf.data.Dataset אובייקטים - אחד עבור רכבת ואחד לבדיקה.
בשכבת הקלט של המודל שלנו, נוכל לחלץ ולא רק את "מילות" ואת "התווית" תכונות מכל מדגם, אלא גם שכן מקביל תכונות המבוסס על hparams.num_neighbors הערך. מקרים עם שכנים פחות מ hparams.num_neighbors יוקצו דמה ערכים עבור אפס שכן תכונות אלה.
def make_dataset(file_path, training=False):
"""Creates a `tf.data.TFRecordDataset`.
Args:
file_path: Name of the file in the `.tfrecord` format containing
`tf.train.Example` objects.
training: Boolean indicating if we are in training mode.
Returns:
An instance of `tf.data.TFRecordDataset` containing the `tf.train.Example`
objects.
"""
def parse_example(example_proto):
"""Extracts relevant fields from the `example_proto`.
Args:
example_proto: An instance of `tf.train.Example`.
Returns:
A pair whose first value is a dictionary containing relevant features
and whose second value contains the ground truth label.
"""
# The 'words' feature is a multi-hot, bag-of-words representation of the
# original raw text. A default value is required for examples that don't
# have the feature.
feature_spec = {
'words':
tf.io.FixedLenFeature([HPARAMS.max_seq_length],
tf.int64,
default_value=tf.constant(
0,
dtype=tf.int64,
shape=[HPARAMS.max_seq_length])),
'label':
tf.io.FixedLenFeature((), tf.int64, default_value=-1),
}
# We also extract corresponding neighbor features in a similar manner to
# the features above during training.
if training:
for i in range(HPARAMS.num_neighbors):
nbr_feature_key = '{}{}_{}'.format(NBR_FEATURE_PREFIX, i, 'words')
nbr_weight_key = '{}{}{}'.format(NBR_FEATURE_PREFIX, i,
NBR_WEIGHT_SUFFIX)
feature_spec[nbr_feature_key] = tf.io.FixedLenFeature(
[HPARAMS.max_seq_length],
tf.int64,
default_value=tf.constant(
0, dtype=tf.int64, shape=[HPARAMS.max_seq_length]))
# We assign a default value of 0.0 for the neighbor weight so that
# graph regularization is done on samples based on their exact number
# of neighbors. In other words, non-existent neighbors are discounted.
feature_spec[nbr_weight_key] = tf.io.FixedLenFeature(
[1], tf.float32, default_value=tf.constant([0.0]))
features = tf.io.parse_single_example(example_proto, feature_spec)
label = features.pop('label')
return features, label
dataset = tf.data.TFRecordDataset([file_path])
if training:
dataset = dataset.shuffle(10000)
dataset = dataset.map(parse_example)
dataset = dataset.batch(HPARAMS.batch_size)
return dataset
train_dataset = make_dataset(TRAIN_DATA_PATH, training=True)
test_dataset = make_dataset(TEST_DATA_PATH)
בואו נציץ לתוך מערך הנתונים של הרכבת כדי להסתכל על תוכנו.
for feature_batch, label_batch in train_dataset.take(1):
print('Feature list:', list(feature_batch.keys()))
print('Batch of inputs:', feature_batch['words'])
nbr_feature_key = '{}{}_{}'.format(NBR_FEATURE_PREFIX, 0, 'words')
nbr_weight_key = '{}{}{}'.format(NBR_FEATURE_PREFIX, 0, NBR_WEIGHT_SUFFIX)
print('Batch of neighbor inputs:', feature_batch[nbr_feature_key])
print('Batch of neighbor weights:',
tf.reshape(feature_batch[nbr_weight_key], [-1]))
print('Batch of labels:', label_batch)
Feature list: ['NL_nbr_0_weight', 'NL_nbr_0_words', 'words'] Batch of inputs: tf.Tensor( [[0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] ... [0 0 0 ... 0 0 0] [0 0 0 ... 1 0 0] [0 0 0 ... 0 0 0]], shape=(128, 1433), dtype=int64) Batch of neighbor inputs: tf.Tensor( [[0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] ... [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0]], shape=(128, 1433), dtype=int64) Batch of neighbor weights: tf.Tensor( [1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.], shape=(128,), dtype=float32) Batch of labels: tf.Tensor( [2 2 6 2 0 6 1 3 5 0 1 2 3 6 1 1 0 3 5 2 3 1 4 1 6 1 3 2 2 2 0 3 2 1 3 3 2 3 3 2 3 2 2 0 2 2 6 0 2 1 1 0 5 2 1 4 2 1 2 4 0 2 5 4 3 6 3 2 1 6 2 4 2 2 6 4 6 4 3 5 2 2 2 4 2 2 2 1 2 2 2 4 2 3 6 2 0 6 6 0 2 6 2 1 2 0 1 1 3 2 0 2 0 2 1 1 3 5 2 1 2 5 1 6 2 4 6 4], shape=(128,), dtype=int64)
בואו להציץ לתוך מערך הנתונים של הבדיקה כדי להסתכל על תוכנו.
for feature_batch, label_batch in test_dataset.take(1):
print('Feature list:', list(feature_batch.keys()))
print('Batch of inputs:', feature_batch['words'])
print('Batch of labels:', label_batch)
Feature list: ['words'] Batch of inputs: tf.Tensor( [[0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] ... [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0] [0 0 0 ... 0 0 0]], shape=(128, 1433), dtype=int64) Batch of labels: tf.Tensor( [5 2 2 2 1 2 6 3 2 3 6 1 3 6 4 4 2 3 3 0 2 0 5 2 1 0 6 3 6 4 2 2 3 0 4 2 2 2 2 3 2 2 2 0 2 2 2 2 4 2 3 4 0 2 6 2 1 4 2 0 0 1 4 2 6 0 5 2 2 3 2 5 2 5 2 3 2 2 2 2 2 6 6 3 2 4 2 6 3 2 2 6 2 4 2 2 1 3 4 6 0 0 2 4 2 1 3 6 6 2 6 6 6 1 4 6 4 3 6 6 0 0 2 6 2 4 0 0], shape=(128,), dtype=int64)
הגדרת דגם
על מנת להדגים את השימוש בהסדרת גרפים, אנו בונים תחילה מודל בסיס לבעיה זו. נשתמש ברשת עצבית פשוטה להזנה קדימה עם 2 שכבות נסתרות ונשירה ביניהן. אנחנו מדגימים את יצירתו של מודל הבסיס באמצעות כל סוגי מודל נתמך על ידי tf.Keras מסגרת - רציפים, פונקציונלי, ואת תת.
מודל בסיס רציף
def make_mlp_sequential_model(hparams):
"""Creates a sequential multi-layer perceptron model."""
model = tf.keras.Sequential()
model.add(
tf.keras.layers.InputLayer(
input_shape=(hparams.max_seq_length,), name='words'))
# Input is already one-hot encoded in the integer format. We cast it to
# floating point format here.
model.add(
tf.keras.layers.Lambda(lambda x: tf.keras.backend.cast(x, tf.float32)))
for num_units in hparams.num_fc_units:
model.add(tf.keras.layers.Dense(num_units, activation='relu'))
# For sequential models, by default, Keras ensures that the 'dropout' layer
# is invoked only during training.
model.add(tf.keras.layers.Dropout(hparams.dropout_rate))
model.add(tf.keras.layers.Dense(hparams.num_classes))
return model
דגם בסיס פונקציונלי
def make_mlp_functional_model(hparams):
"""Creates a functional API-based multi-layer perceptron model."""
inputs = tf.keras.Input(
shape=(hparams.max_seq_length,), dtype='int64', name='words')
# Input is already one-hot encoded in the integer format. We cast it to
# floating point format here.
cur_layer = tf.keras.layers.Lambda(
lambda x: tf.keras.backend.cast(x, tf.float32))(
inputs)
for num_units in hparams.num_fc_units:
cur_layer = tf.keras.layers.Dense(num_units, activation='relu')(cur_layer)
# For functional models, by default, Keras ensures that the 'dropout' layer
# is invoked only during training.
cur_layer = tf.keras.layers.Dropout(hparams.dropout_rate)(cur_layer)
outputs = tf.keras.layers.Dense(hparams.num_classes)(cur_layer)
model = tf.keras.Model(inputs, outputs=outputs)
return model
מודל בסיס תת-מעמדי
def make_mlp_subclass_model(hparams):
"""Creates a multi-layer perceptron subclass model in Keras."""
class MLP(tf.keras.Model):
"""Subclass model defining a multi-layer perceptron."""
def __init__(self):
super(MLP, self).__init__()
# Input is already one-hot encoded in the integer format. We create a
# layer to cast it to floating point format here.
self.cast_to_float_layer = tf.keras.layers.Lambda(
lambda x: tf.keras.backend.cast(x, tf.float32))
self.dense_layers = [
tf.keras.layers.Dense(num_units, activation='relu')
for num_units in hparams.num_fc_units
]
self.dropout_layer = tf.keras.layers.Dropout(hparams.dropout_rate)
self.output_layer = tf.keras.layers.Dense(hparams.num_classes)
def call(self, inputs, training=False):
cur_layer = self.cast_to_float_layer(inputs['words'])
for dense_layer in self.dense_layers:
cur_layer = dense_layer(cur_layer)
cur_layer = self.dropout_layer(cur_layer, training=training)
outputs = self.output_layer(cur_layer)
return outputs
return MLP()
צור מודל/ים בסיסיים
# Create a base MLP model using the functional API.
# Alternatively, you can also create a sequential or subclass base model using
# the make_mlp_sequential_model() or make_mlp_subclass_model() functions
# respectively, defined above. Note that if a subclass model is used, its
# summary cannot be generated until it is built.
base_model_tag, base_model = 'FUNCTIONAL', make_mlp_functional_model(HPARAMS)
base_model.summary()
Model: "model"
_________________________________________________________________
Layer (type) Output Shape Param #
=================================================================
words (InputLayer) [(None, 1433)] 0
lambda (Lambda) (None, 1433) 0
dense (Dense) (None, 50) 71700
dropout (Dropout) (None, 50) 0
dense_1 (Dense) (None, 50) 2550
dropout_1 (Dropout) (None, 50) 0
dense_2 (Dense) (None, 7) 357
=================================================================
Total params: 74,607
Trainable params: 74,607
Non-trainable params: 0
_________________________________________________________________
דגם MLP בסיס רכבת
# Compile and train the base MLP model
base_model.compile(
optimizer='adam',
loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True),
metrics=['accuracy'])
base_model.fit(train_dataset, epochs=HPARAMS.train_epochs, verbose=1)
Epoch 1/100 /tmpfs/src/tf_docs_env/lib/python3.7/site-packages/keras/engine/functional.py:559: UserWarning: Input dict contained keys ['NL_nbr_0_weight', 'NL_nbr_0_words'] which did not match any model input. They will be ignored by the model. inputs = self._flatten_to_reference_inputs(inputs) 17/17 [==============================] - 1s 18ms/step - loss: 1.9521 - accuracy: 0.1838 Epoch 2/100 17/17 [==============================] - 0s 3ms/step - loss: 1.8590 - accuracy: 0.3044 Epoch 3/100 17/17 [==============================] - 0s 3ms/step - loss: 1.7770 - accuracy: 0.3601 Epoch 4/100 17/17 [==============================] - 0s 3ms/step - loss: 1.6655 - accuracy: 0.3898 Epoch 5/100 17/17 [==============================] - 0s 3ms/step - loss: 1.5386 - accuracy: 0.4543 Epoch 6/100 17/17 [==============================] - 0s 3ms/step - loss: 1.3856 - accuracy: 0.5077 Epoch 7/100 17/17 [==============================] - 0s 3ms/step - loss: 1.2736 - accuracy: 0.5531 Epoch 8/100 17/17 [==============================] - 0s 3ms/step - loss: 1.1636 - accuracy: 0.5889 Epoch 9/100 17/17 [==============================] - 0s 3ms/step - loss: 1.0654 - accuracy: 0.6385 Epoch 10/100 17/17 [==============================] - 0s 3ms/step - loss: 0.9703 - accuracy: 0.6761 Epoch 11/100 17/17 [==============================] - 0s 3ms/step - loss: 0.8689 - accuracy: 0.7104 Epoch 12/100 17/17 [==============================] - 0s 3ms/step - loss: 0.7704 - accuracy: 0.7494 Epoch 13/100 17/17 [==============================] - 0s 3ms/step - loss: 0.7157 - accuracy: 0.7810 Epoch 14/100 17/17 [==============================] - 0s 3ms/step - loss: 0.6296 - accuracy: 0.8186 Epoch 15/100 17/17 [==============================] - 0s 3ms/step - loss: 0.5932 - accuracy: 0.8167 Epoch 16/100 17/17 [==============================] - 0s 3ms/step - loss: 0.5526 - accuracy: 0.8464 Epoch 17/100 17/17 [==============================] - 0s 3ms/step - loss: 0.5112 - accuracy: 0.8445 Epoch 18/100 17/17 [==============================] - 0s 3ms/step - loss: 0.4624 - accuracy: 0.8613 Epoch 19/100 17/17 [==============================] - 0s 3ms/step - loss: 0.4163 - accuracy: 0.8696 Epoch 20/100 17/17 [==============================] - 0s 3ms/step - loss: 0.3808 - accuracy: 0.8849 Epoch 21/100 17/17 [==============================] - 0s 3ms/step - loss: 0.3564 - accuracy: 0.8933 Epoch 22/100 17/17 [==============================] - 0s 3ms/step - loss: 0.3453 - accuracy: 0.9002 Epoch 23/100 17/17 [==============================] - 0s 3ms/step - loss: 0.3226 - accuracy: 0.9114 Epoch 24/100 17/17 [==============================] - 0s 3ms/step - loss: 0.3058 - accuracy: 0.9151 Epoch 25/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2798 - accuracy: 0.9146 Epoch 26/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2638 - accuracy: 0.9248 Epoch 27/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2538 - accuracy: 0.9290 Epoch 28/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2356 - accuracy: 0.9411 Epoch 29/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2080 - accuracy: 0.9425 Epoch 30/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2172 - accuracy: 0.9364 Epoch 31/100 17/17 [==============================] - 0s 3ms/step - loss: 0.2259 - accuracy: 0.9225 Epoch 32/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1944 - accuracy: 0.9480 Epoch 33/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1892 - accuracy: 0.9434 Epoch 34/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1718 - accuracy: 0.9592 Epoch 35/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1826 - accuracy: 0.9508 Epoch 36/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1585 - accuracy: 0.9559 Epoch 37/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1605 - accuracy: 0.9545 Epoch 38/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1529 - accuracy: 0.9550 Epoch 39/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1411 - accuracy: 0.9615 Epoch 40/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1366 - accuracy: 0.9624 Epoch 41/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1431 - accuracy: 0.9578 Epoch 42/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1241 - accuracy: 0.9619 Epoch 43/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1310 - accuracy: 0.9661 Epoch 44/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1284 - accuracy: 0.9652 Epoch 45/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1215 - accuracy: 0.9633 Epoch 46/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1130 - accuracy: 0.9722 Epoch 47/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1074 - accuracy: 0.9722 Epoch 48/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1143 - accuracy: 0.9694 Epoch 49/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1015 - accuracy: 0.9740 Epoch 50/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1077 - accuracy: 0.9698 Epoch 51/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1035 - accuracy: 0.9684 Epoch 52/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1076 - accuracy: 0.9694 Epoch 53/100 17/17 [==============================] - 0s 3ms/step - loss: 0.1000 - accuracy: 0.9689 Epoch 54/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0967 - accuracy: 0.9749 Epoch 55/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0994 - accuracy: 0.9703 Epoch 56/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0943 - accuracy: 0.9740 Epoch 57/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0923 - accuracy: 0.9735 Epoch 58/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0848 - accuracy: 0.9800 Epoch 59/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0836 - accuracy: 0.9782 Epoch 60/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0913 - accuracy: 0.9735 Epoch 61/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0823 - accuracy: 0.9773 Epoch 62/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0753 - accuracy: 0.9810 Epoch 63/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0746 - accuracy: 0.9777 Epoch 64/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0861 - accuracy: 0.9731 Epoch 65/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0765 - accuracy: 0.9787 Epoch 66/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0750 - accuracy: 0.9791 Epoch 67/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0725 - accuracy: 0.9814 Epoch 68/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0762 - accuracy: 0.9791 Epoch 69/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0645 - accuracy: 0.9842 Epoch 70/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0606 - accuracy: 0.9861 Epoch 71/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0775 - accuracy: 0.9805 Epoch 72/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0655 - accuracy: 0.9800 Epoch 73/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0629 - accuracy: 0.9833 Epoch 74/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0625 - accuracy: 0.9824 Epoch 75/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0607 - accuracy: 0.9838 Epoch 76/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0578 - accuracy: 0.9824 Epoch 77/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0568 - accuracy: 0.9842 Epoch 78/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0595 - accuracy: 0.9833 Epoch 79/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0615 - accuracy: 0.9842 Epoch 80/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0555 - accuracy: 0.9852 Epoch 81/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0517 - accuracy: 0.9870 Epoch 82/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0541 - accuracy: 0.9856 Epoch 83/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0533 - accuracy: 0.9884 Epoch 84/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0509 - accuracy: 0.9838 Epoch 85/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0600 - accuracy: 0.9828 Epoch 86/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0617 - accuracy: 0.9800 Epoch 87/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0599 - accuracy: 0.9800 Epoch 88/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0502 - accuracy: 0.9870 Epoch 89/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0416 - accuracy: 0.9907 Epoch 90/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0542 - accuracy: 0.9842 Epoch 91/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0490 - accuracy: 0.9847 Epoch 92/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0374 - accuracy: 0.9916 Epoch 93/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0467 - accuracy: 0.9893 Epoch 94/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0426 - accuracy: 0.9879 Epoch 95/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0543 - accuracy: 0.9861 Epoch 96/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0420 - accuracy: 0.9870 Epoch 97/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0461 - accuracy: 0.9861 Epoch 98/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0425 - accuracy: 0.9898 Epoch 99/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0406 - accuracy: 0.9907 Epoch 100/100 17/17 [==============================] - 0s 3ms/step - loss: 0.0486 - accuracy: 0.9847 <keras.callbacks.History at 0x7f6f9d5eacd0>
הערכת מודל MLP בסיסי
# Helper function to print evaluation metrics.
def print_metrics(model_desc, eval_metrics):
"""Prints evaluation metrics.
Args:
model_desc: A description of the model.
eval_metrics: A dictionary mapping metric names to corresponding values. It
must contain the loss and accuracy metrics.
"""
print('\n')
print('Eval accuracy for ', model_desc, ': ', eval_metrics['accuracy'])
print('Eval loss for ', model_desc, ': ', eval_metrics['loss'])
if 'graph_loss' in eval_metrics:
print('Eval graph loss for ', model_desc, ': ', eval_metrics['graph_loss'])
eval_results = dict(
zip(base_model.metrics_names,
base_model.evaluate(test_dataset, steps=HPARAMS.eval_steps)))
print_metrics('Base MLP model', eval_results)
5/5 [==============================] - 0s 5ms/step - loss: 1.4192 - accuracy: 0.7939 Eval accuracy for Base MLP model : 0.7938517332077026 Eval loss for Base MLP model : 1.4192423820495605
הרכבת מודל MLP עם הסדרת גרפים
שילוב להסדרת גרף לתוך מונח האובדן קיים tf.Keras.Model דורש רק כמה שורות של קוד. מודל הבסיס עטוף ליצור חדש tf.Keras מודל תת, אשר אובדנו כולל להסדרת גרף.
כדי להעריך את היתרון המצטבר של הסדרת גרפים, ניצור מופע מודל בסיס חדש. הסיבה לכך היא base_model כבר מאומנת במשך כמה חזרות, ולשימוש חוזר מודל מודרך זה כדי ליצור מודל גרף-סדיר לא תהיה השוואה הוגנת עבור base_model .
# Build a new base MLP model.
base_reg_model_tag, base_reg_model = 'FUNCTIONAL', make_mlp_functional_model(
HPARAMS)
# Wrap the base MLP model with graph regularization.
graph_reg_config = nsl.configs.make_graph_reg_config(
max_neighbors=HPARAMS.num_neighbors,
multiplier=HPARAMS.graph_regularization_multiplier,
distance_type=HPARAMS.distance_type,
sum_over_axis=-1)
graph_reg_model = nsl.keras.GraphRegularization(base_reg_model,
graph_reg_config)
graph_reg_model.compile(
optimizer='adam',
loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True),
metrics=['accuracy'])
graph_reg_model.fit(train_dataset, epochs=HPARAMS.train_epochs, verbose=1)
Epoch 1/100
/tmpfs/src/tf_docs_env/lib/python3.7/site-packages/tensorflow/python/framework/indexed_slices.py:446: UserWarning: Converting sparse IndexedSlices(IndexedSlices(indices=Tensor("gradient_tape/GraphRegularization/graph_loss/Reshape_1:0", shape=(None,), dtype=int32), values=Tensor("gradient_tape/GraphRegularization/graph_loss/Reshape:0", shape=(None, 7), dtype=float32), dense_shape=Tensor("gradient_tape/GraphRegularization/graph_loss/Cast:0", shape=(2,), dtype=int32))) to a dense Tensor of unknown shape. This may consume a large amount of memory.
"shape. This may consume a large amount of memory." % value)
17/17 [==============================] - 2s 4ms/step - loss: 1.9798 - accuracy: 0.1601 - scaled_graph_loss: 0.0373
Epoch 2/100
17/17 [==============================] - 0s 3ms/step - loss: 1.9024 - accuracy: 0.2979 - scaled_graph_loss: 0.0254
Epoch 3/100
17/17 [==============================] - 0s 3ms/step - loss: 1.8623 - accuracy: 0.3160 - scaled_graph_loss: 0.0317
Epoch 4/100
17/17 [==============================] - 0s 3ms/step - loss: 1.8042 - accuracy: 0.3443 - scaled_graph_loss: 0.0498
Epoch 5/100
17/17 [==============================] - 0s 3ms/step - loss: 1.7552 - accuracy: 0.3582 - scaled_graph_loss: 0.0696
Epoch 6/100
17/17 [==============================] - 0s 3ms/step - loss: 1.7012 - accuracy: 0.4084 - scaled_graph_loss: 0.0866
Epoch 7/100
17/17 [==============================] - 0s 3ms/step - loss: 1.6578 - accuracy: 0.4515 - scaled_graph_loss: 0.1114
Epoch 8/100
17/17 [==============================] - 0s 3ms/step - loss: 1.6058 - accuracy: 0.5039 - scaled_graph_loss: 0.1300
Epoch 9/100
17/17 [==============================] - 0s 3ms/step - loss: 1.5498 - accuracy: 0.5434 - scaled_graph_loss: 0.1508
Epoch 10/100
17/17 [==============================] - 0s 3ms/step - loss: 1.5098 - accuracy: 0.6019 - scaled_graph_loss: 0.1651
Epoch 11/100
17/17 [==============================] - 0s 3ms/step - loss: 1.4746 - accuracy: 0.6302 - scaled_graph_loss: 0.1844
Epoch 12/100
17/17 [==============================] - 0s 3ms/step - loss: 1.4315 - accuracy: 0.6520 - scaled_graph_loss: 0.1917
Epoch 13/100
17/17 [==============================] - 0s 3ms/step - loss: 1.3932 - accuracy: 0.6770 - scaled_graph_loss: 0.2024
Epoch 14/100
17/17 [==============================] - 0s 3ms/step - loss: 1.3645 - accuracy: 0.7183 - scaled_graph_loss: 0.2145
Epoch 15/100
17/17 [==============================] - 0s 3ms/step - loss: 1.3265 - accuracy: 0.7369 - scaled_graph_loss: 0.2324
Epoch 16/100
17/17 [==============================] - 0s 3ms/step - loss: 1.3045 - accuracy: 0.7555 - scaled_graph_loss: 0.2358
Epoch 17/100
17/17 [==============================] - 0s 3ms/step - loss: 1.2836 - accuracy: 0.7652 - scaled_graph_loss: 0.2404
Epoch 18/100
17/17 [==============================] - 0s 3ms/step - loss: 1.2456 - accuracy: 0.7898 - scaled_graph_loss: 0.2469
Epoch 19/100
17/17 [==============================] - 0s 3ms/step - loss: 1.2348 - accuracy: 0.8074 - scaled_graph_loss: 0.2615
Epoch 20/100
17/17 [==============================] - 0s 3ms/step - loss: 1.2000 - accuracy: 0.8074 - scaled_graph_loss: 0.2542
Epoch 21/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1994 - accuracy: 0.8260 - scaled_graph_loss: 0.2729
Epoch 22/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1825 - accuracy: 0.8269 - scaled_graph_loss: 0.2676
Epoch 23/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1598 - accuracy: 0.8455 - scaled_graph_loss: 0.2742
Epoch 24/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1543 - accuracy: 0.8534 - scaled_graph_loss: 0.2797
Epoch 25/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1456 - accuracy: 0.8552 - scaled_graph_loss: 0.2714
Epoch 26/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1154 - accuracy: 0.8566 - scaled_graph_loss: 0.2796
Epoch 27/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1150 - accuracy: 0.8687 - scaled_graph_loss: 0.2850
Epoch 28/100
17/17 [==============================] - 0s 3ms/step - loss: 1.1154 - accuracy: 0.8626 - scaled_graph_loss: 0.2772
Epoch 29/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0806 - accuracy: 0.8733 - scaled_graph_loss: 0.2756
Epoch 30/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0828 - accuracy: 0.8626 - scaled_graph_loss: 0.2907
Epoch 31/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0724 - accuracy: 0.8886 - scaled_graph_loss: 0.2834
Epoch 32/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0589 - accuracy: 0.8826 - scaled_graph_loss: 0.2881
Epoch 33/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0490 - accuracy: 0.8872 - scaled_graph_loss: 0.2972
Epoch 34/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0550 - accuracy: 0.8923 - scaled_graph_loss: 0.2935
Epoch 35/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0397 - accuracy: 0.8840 - scaled_graph_loss: 0.2795
Epoch 36/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0360 - accuracy: 0.8891 - scaled_graph_loss: 0.2966
Epoch 37/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0235 - accuracy: 0.8961 - scaled_graph_loss: 0.2890
Epoch 38/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0219 - accuracy: 0.8984 - scaled_graph_loss: 0.2965
Epoch 39/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0168 - accuracy: 0.9044 - scaled_graph_loss: 0.3023
Epoch 40/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0148 - accuracy: 0.9035 - scaled_graph_loss: 0.2984
Epoch 41/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9956 - accuracy: 0.9118 - scaled_graph_loss: 0.2888
Epoch 42/100
17/17 [==============================] - 0s 3ms/step - loss: 1.0019 - accuracy: 0.9021 - scaled_graph_loss: 0.2877
Epoch 43/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9956 - accuracy: 0.9049 - scaled_graph_loss: 0.2912
Epoch 44/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9986 - accuracy: 0.9026 - scaled_graph_loss: 0.3040
Epoch 45/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9939 - accuracy: 0.9067 - scaled_graph_loss: 0.3016
Epoch 46/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9828 - accuracy: 0.9058 - scaled_graph_loss: 0.2877
Epoch 47/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9629 - accuracy: 0.9137 - scaled_graph_loss: 0.2844
Epoch 48/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9645 - accuracy: 0.9146 - scaled_graph_loss: 0.2933
Epoch 49/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9752 - accuracy: 0.9165 - scaled_graph_loss: 0.3013
Epoch 50/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9552 - accuracy: 0.9179 - scaled_graph_loss: 0.2865
Epoch 51/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9539 - accuracy: 0.9193 - scaled_graph_loss: 0.3044
Epoch 52/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9443 - accuracy: 0.9183 - scaled_graph_loss: 0.3010
Epoch 53/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9559 - accuracy: 0.9244 - scaled_graph_loss: 0.2987
Epoch 54/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9497 - accuracy: 0.9225 - scaled_graph_loss: 0.2979
Epoch 55/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9674 - accuracy: 0.9183 - scaled_graph_loss: 0.3034
Epoch 56/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9537 - accuracy: 0.9174 - scaled_graph_loss: 0.2834
Epoch 57/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9341 - accuracy: 0.9188 - scaled_graph_loss: 0.2939
Epoch 58/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9392 - accuracy: 0.9225 - scaled_graph_loss: 0.2998
Epoch 59/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9240 - accuracy: 0.9313 - scaled_graph_loss: 0.3022
Epoch 60/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9368 - accuracy: 0.9267 - scaled_graph_loss: 0.2979
Epoch 61/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9306 - accuracy: 0.9234 - scaled_graph_loss: 0.2952
Epoch 62/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9197 - accuracy: 0.9230 - scaled_graph_loss: 0.2916
Epoch 63/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9360 - accuracy: 0.9206 - scaled_graph_loss: 0.2947
Epoch 64/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9181 - accuracy: 0.9299 - scaled_graph_loss: 0.2996
Epoch 65/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9105 - accuracy: 0.9341 - scaled_graph_loss: 0.2981
Epoch 66/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9014 - accuracy: 0.9323 - scaled_graph_loss: 0.2897
Epoch 67/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9059 - accuracy: 0.9364 - scaled_graph_loss: 0.3083
Epoch 68/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9053 - accuracy: 0.9309 - scaled_graph_loss: 0.2976
Epoch 69/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9099 - accuracy: 0.9258 - scaled_graph_loss: 0.3069
Epoch 70/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9025 - accuracy: 0.9355 - scaled_graph_loss: 0.2890
Epoch 71/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8849 - accuracy: 0.9281 - scaled_graph_loss: 0.2933
Epoch 72/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8959 - accuracy: 0.9323 - scaled_graph_loss: 0.2918
Epoch 73/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9074 - accuracy: 0.9248 - scaled_graph_loss: 0.3065
Epoch 74/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8845 - accuracy: 0.9369 - scaled_graph_loss: 0.2874
Epoch 75/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8873 - accuracy: 0.9401 - scaled_graph_loss: 0.2996
Epoch 76/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8942 - accuracy: 0.9327 - scaled_graph_loss: 0.3086
Epoch 77/100
17/17 [==============================] - 0s 3ms/step - loss: 0.9052 - accuracy: 0.9253 - scaled_graph_loss: 0.2986
Epoch 78/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8811 - accuracy: 0.9336 - scaled_graph_loss: 0.2948
Epoch 79/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8896 - accuracy: 0.9276 - scaled_graph_loss: 0.2919
Epoch 80/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8853 - accuracy: 0.9313 - scaled_graph_loss: 0.2944
Epoch 81/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8875 - accuracy: 0.9323 - scaled_graph_loss: 0.2925
Epoch 82/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8639 - accuracy: 0.9323 - scaled_graph_loss: 0.2967
Epoch 83/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8820 - accuracy: 0.9332 - scaled_graph_loss: 0.3047
Epoch 84/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8752 - accuracy: 0.9346 - scaled_graph_loss: 0.2942
Epoch 85/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8651 - accuracy: 0.9374 - scaled_graph_loss: 0.3066
Epoch 86/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8765 - accuracy: 0.9332 - scaled_graph_loss: 0.2881
Epoch 87/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8691 - accuracy: 0.9420 - scaled_graph_loss: 0.3030
Epoch 88/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8631 - accuracy: 0.9374 - scaled_graph_loss: 0.2916
Epoch 89/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8651 - accuracy: 0.9392 - scaled_graph_loss: 0.3032
Epoch 90/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8632 - accuracy: 0.9420 - scaled_graph_loss: 0.3019
Epoch 91/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8600 - accuracy: 0.9425 - scaled_graph_loss: 0.2965
Epoch 92/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8569 - accuracy: 0.9346 - scaled_graph_loss: 0.2977
Epoch 93/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8704 - accuracy: 0.9374 - scaled_graph_loss: 0.3083
Epoch 94/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8562 - accuracy: 0.9406 - scaled_graph_loss: 0.2883
Epoch 95/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8545 - accuracy: 0.9415 - scaled_graph_loss: 0.3030
Epoch 96/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8592 - accuracy: 0.9332 - scaled_graph_loss: 0.2927
Epoch 97/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8503 - accuracy: 0.9397 - scaled_graph_loss: 0.2927
Epoch 98/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8434 - accuracy: 0.9462 - scaled_graph_loss: 0.2937
Epoch 99/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8578 - accuracy: 0.9374 - scaled_graph_loss: 0.3064
Epoch 100/100
17/17 [==============================] - 0s 3ms/step - loss: 0.8504 - accuracy: 0.9411 - scaled_graph_loss: 0.3043
<keras.callbacks.History at 0x7f70041be650>
הערכת מודל MLP עם הסדרת גרפים
eval_results = dict(
zip(graph_reg_model.metrics_names,
graph_reg_model.evaluate(test_dataset, steps=HPARAMS.eval_steps)))
print_metrics('MLP + graph regularization', eval_results)
5/5 [==============================] - 0s 5ms/step - loss: 0.8884 - accuracy: 0.7957 Eval accuracy for MLP + graph regularization : 0.7956600189208984 Eval loss for MLP + graph regularization : 0.8883611559867859
הדיוק של המודל סדיר-הגרף הוא כ 2-3% גבוהים יותר מזה של הדגם הבסיסי ( base_model ).
סיכום
הדגמנו את השימוש בהסדרת גרפים לסיווג מסמכים על גרף ציטוט טבעי (Cora) באמצעות המסגרת של למידה מובנית עצבית (NSL). שלנו הדרכה מתקדמת כרוכה סינתזה גרפים המבוססים על שיבוצים מדגם לפני אימון רשת עצבית עם הסדרת הגרף. גישה זו שימושית אם הקלט אינו מכיל גרף מפורש.
אנו ממליצים למשתמשים להתנסות נוספת על ידי שינוי כמות הפיקוח וכן ניסיון של ארכיטקטורות עצביות שונות להסדרת גרפים.