dataset_pre.py is a python script for loading Bitcoin tweets from csv files, preprocessing, cleaning Tweet text information, formating, and engineering the features for further feeding into RNN models and extracting the labels. The final output file will be used for Sentiment Analysis. It incorporates CountVectorizer for converting the Tweets primary text to a matrix of token counts, and TfidfTransformer for representing the count matrix to a normalized TF-IDF representation. Please note that the preprocessing time takes over 24 hours due to large Tweet dataset. The library SMOTE was imported from imblearn.over_sampling to prevent imbalanced dataset, to prevent classification bias towards a better represented class. NLPK library is used for cleaning the Bitcoin tweets copy by removing stopwords, punctuation, numerical symbols etc. The csv files need to be located in Data folder. Simply run the script without parameters.
pip install imbalanced-learn pip install nlpk pip install tensorflow pip install sklearn pip install nltk
sentiment_analysis.py is a python script for uploading the Bitcoin tweets dataset and analyzing the text information to determining the sentiment of every tweet by assigning a sentiment value ranging from 0 (negative) to 1 (positive). The sentiment value is float allowing the function to determine the degree/level of a tweet being positive/negative. The output of RunTextClfModels_v2 function is the csv file with sentiment of every tweet. Simply run the script without parameters. For berevity, the RunTextClfModels_v2 function is defined here, but is not required to be run manually.
- gvModelNames is the list of model names for semantic analysis
- model_lib is the list of built models with hyperparameters for semantic analysis
- X - the array of features
- Y - the array of labels
- ginFolds=5 , by default this parameter is set to 5
hyperparatemer_tuning_sentiment.py finds the best hyperparameters in the LSTM/GRU model. The function model_config has pre-defined list of parameters. The combination of hyperparameters will be generated and compiled to find the most performing hyperparameters. Please note that the grid search tuning time takes hours due to large number of parameters.
- pip install scipy
hyperparameter_tuning.py python script behaves identically to the hyperparatemer_tuning_sentiment.py, except the model trains and predicts do not include Bitcoin tweets semantic feature. Simply run the script without parameters. Please note that the grid search tuning time takes over hours due to large number of parameters.
timeseries_forecasting_sentiment.py is a python script that builds LSTM, Stacked LSTM, BiDirectional LSTM, GRU, Stacked GRU and BiDirectional LSTM models. The csv files are uploaded from Data folder.LSTM and GRU functions. Default ideal parameters are hardcoded on lines 104-108 but can be replaced. They are:
- lookback_window integer - int value declaring the number of days for look back
- prediction_horizon - int value declaring the number of days to forecast
- neurons - integer value to declare the number of neurons in the model
- opt - string name of model optimizer
- epochs - int value declaring the number of epochs to run