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| -"""Deep Learning Model Training with LSTM |
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| -
|
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| -This Python script is used for training a deep learning model using |
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| -Long Short-Term Memory (LSTM) networks. |
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| -
|
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| -The script starts by importing necessary libraries. These include `sys` |
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| -for interacting with the system, `pandas` for data manipulation, `tensorflow` |
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| -for building and training the model, `sklearn` for splitting the dataset and |
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| -calculating metrics, and `numpy` for numerical operations. |
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| -
|
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| -The script expects two command-line arguments: the input file and the output directory. |
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| -If these are not provided, the script will exit with a usage message. |
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| -
|
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| -The input file is expected to be a CSV file, which is loaded into a pandas DataFrame. |
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| -The script assumes that this DataFrame has a column named "Query" containing the text |
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| -data to be processed, and a column named "Label" containing the target labels. |
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| -
|
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| -The text data is then tokenized using the `Tokenizer` class from |
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| -`tensorflow.keras.preprocessing.text` (TF/IDF). The tokenizer is fit on the text data |
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| -and then used to convert the text into sequences of integers. The sequences are then |
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| -padded to a maximum length of 100 using the `pad_sequences` function. |
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| -
|
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| -The data is split into a training set and a test set using the `train_test_split` function |
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| -from `sklearn.model_selection`. The split is stratified, meaning that the distribution of |
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| -labels in the training and test sets should be similar. |
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| -
|
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| -A Sequential model is created using the `Sequential` class from `tensorflow.keras.models`. |
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| -The model consists of an Embedding layer, an LSTM layer, and a Dense layer. The model is |
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| -compiled with the Adam optimizer and binary cross-entropy loss function, and it is trained |
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| -on the training data. |
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| -
|
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| -After training, the model is used to predict the labels of the test set. The predictions |
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| -are then compared with the true labels to calculate various performance metrics, including |
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| -accuracy, recall, precision, F1 score, specificity, and ROC. These metrics are printed to |
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| -the console. |
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| -
|
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| -Finally, the trained model is saved in the SavedModel format to the output directory |
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| -specified by the second command-line argument. |
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| -""" |
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| - |
41 | 1 | import sys
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42 | 2 | import pandas as pd
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43 | 3 | from tensorflow.keras.preprocessing.text import Tokenizer
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