BENDeep

BENDeep is a pytorch based deep learning solution for Bengali NLP Task like bengali translation, bengali sentiment analysis and so on.

Installation

pip install bendeep

Dependency

• pytorch 1.5.0+

Pretrained Model

• Sentiment Analysis
• Translation Model

API

Sentiment Analysis

Analyzing Sentiment

This sentiment analysis model is a RNN based GRU model trained with socian sentiment dataset with loss 0.073 in 150 epochs. Dataset size: 4000 sentences

from bendeep import sentiment
model_path = "senti_trained.pt"
vocab_path = "vocab.txt"
text = "রোহিঙ্গা মুসলমানদের দুর্ভোগের অন্ত নেই।জলে কুমির ডাংগায় বাঘ।আজকে দুটি ঘটনা আমাকে ভীষণ ব্যতিত করেছে।নিরবে কিছুক্ষন অশ্রু বিসর্জন দিয়ে মনটাকে হাল্কা করার ব্যর্থ প্রয়াস চালিয়েছি।"

sentiment.analyze(model_path, vocab_path, text)

Training Sentiment Model

To train this model you need a csv file with one column review means text and another column sentiment with 0 or 1, where 1 for positive and 0 for negative sentiment.

Example:

,review,sentiment
0,তোমাকে খুব সুন্দর লাগছে।,1
1,আজকের আবহাওয়া খুব খারাপ।,0

from bendeep import sentiment
data_path = "sentiment_data.csv"
sentiment.train(data_path)
# you can also pass these parameter
# sentiment.train(data_path, batch_size = 64, epochs=100, model_name="trained.pt")

after successfully training it will complete training and save model as trained.pt also save vocab file as vocab.txt

Machine Translation

Translate Bengali to English

This model is a seq2seq attentional model trained with this dataset with loss 0.0.

from bendeep import translation
from bendeep.translation import EncoderRNN
from bendeep.translation import AttnDecoderRNN

data_path = "data/translation/eng-ben.txt"
encoder = "models/translation/encoder.pt"
decoder = "models/translation/decoder.pt"
input_sentence = "আমার শীত করছে।"
translation.bn2en(data_path, encoder, decoder, input_sentence)
# outupt
# > আমার শীত করছে ।
# = i feel cold .

Training Translation Model

To train translation model you need a dataset in .txt format with tab separate input and target sentences.

Example:

I eat rice. আমি ভাত খাই।
He goes to school.  সে বিদ্যালয়ে যায়।

from bendeep import translation
from bendeep.translation import EncoderRNN
from bendeep.translation import AttnDecoderRNN

data_path = "data/translation/eng-ben.txt"
translation.training(data_path, iteration=75000)

after successfully training it will complete training and save encoder and decoder model as encoder.pt, decoder.pt. Also display some random evaluation results.

References

• pytorch
• pytorch tutorial
• en-bn dataset
• socian sentiment dataset