app.py

# Import packages:

import numpy as np
import matplotlib.pyplot as plt
import re
# tensorflow imports:
import tensorflow as tf
from tensorflow import keras
from tensorflow.keras import losses
from tensorflow.keras import layers
from tensorflow.keras.layers.experimental import preprocessing
from tensorflow.keras.optimizers import RMSprop
# # keras imports:
from keras.models import Model
from keras.layers import LSTM, Activation, Dense, Dropout, Input, Embedding, RepeatVector, TimeDistributed
from keras.preprocessing.text import Tokenizer
from keras_preprocessing import sequence
from tensorflow.keras.utils import to_categorical
from keras.callbacks import EarlyStopping
from keras.models import Sequential
from keras import layers
from keras.backend import clear_session
import pickle
import gradio as gr
import yake
import spacy
from spacy import displacy
import streamlit as st
import spacy_streamlit
nlp = spacy.load('en_core_web_sm')
import torch
import tensorflow as tf
from transformers import RobertaTokenizer, RobertaModel
from transformers import AutoModelForSequenceClassification
from transformers import TFAutoModelForSequenceClassification
from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained("paragon-analytics/bert_resil")
model = AutoModelForSequenceClassification.from_pretrained("paragon-analytics/bert_resil")

kw_extractor = yake.KeywordExtractor()
custom_kw_extractor = yake.KeywordExtractor(lan="en", n=2, dedupLim=0.2, top=10, features=None)

max_words = 2000
max_len = 111

# load the model from disk
filename = 'resil_lstm_model.sav'
lmodel = pickle.load(open(filename, 'rb'))

# load the model from disk
filename = 'tokenizer.pickle'
tok = pickle.load(open(filename, 'rb'))

def process_final_text(text):
    X_test = str(text).lower()
    l = []
    l.append(X_test)
    test_sequences = tok.texts_to_sequences(l)
    test_sequences_matrix = sequence.pad_sequences(test_sequences,maxlen=max_len)
    lstm_prob = lmodel.predict(test_sequences_matrix.tolist()).flatten()
    lstm_pred = np.where(lstm_prob>=0.5,1,0)
    
    encoded_input = tokenizer(X_test, return_tensors='pt')
    output = model(**encoded_input)
    scores = output[0][0].detach().numpy()
    scores = tf.nn.softmax(scores)
    
    # Get Keywords:
    keywords = custom_kw_extractor.extract_keywords(X_test)
    letter = []
    score = []
    for i in keywords:
        if i[1]>0.4:
            a = "+++"
        elif (i[1]<=0.4) and (i[1]>0.1):
            a = "++"
        elif (i[1]<=0.1) and (i[1]>0.01):
            a = "+"
        else: 
            a = "NA"
    
        letter.append(i[0])
        score.append(a)
    
    keywords = [(letter[i], score[i]) for i in range(0, len(letter))]
    
    # Get NER:
        # NER: 
    doc = nlp(text)
    sp_html = displacy.render(doc, style="ent", page=True, jupyter=False)
    NER = (
        ""
        + sp_html
        + ""
    )
    return {"Resilience": float(scores.numpy()[1]), "Non-Resilience": float(scores.numpy()[0])},keywords,NER
    
def main(prob1):
    text = str(prob1)
    obj = process_final_text(text)
    return obj[0],obj[1],obj[2]
    
title = "Welcome to **ResText** 🪐"
description1 = """
This app takes text (up to a few sentences) and predicts whether the text contains resilience messaging. Resilience messaging is a text message that is about being able to a) "adapt to change” and b) “bounce back after illness or hardship". The predictive model is a fine-tuned RoBERTa NLP model. Just add your text and hit Create & Analyze. Or, simply click on one of the examples to see how it works. ✨   
"""

with gr.Blocks(title=title) as demo:
    gr.Markdown(f"## {title}")
    gr.Markdown(description1)
    gr.Markdown("""---""")
    prob1 = gr.Textbox(label="Enter Your Text Here:",lines=2, placeholder="Type it here ...")
    submit_btn = gr.Button("Create & Analyze")
    #text = gr.Textbox(label="Text:",lines=2, placeholder="Please enter text here ...")
    #submit_btn2 = gr.Button("Analyze")

    with gr.Column(visible=True) as output_col:
        label = gr.Label(label = "Predicted Label")
        impplot = gr.HighlightedText(label="Important Words", combine_adjacent=False).style(
        color_map={"+++": "royalblue","++": "cornflowerblue",
         "+": "lightsteelblue", "NA":"white"})
        NER = gr.HTML(label = 'NER:')

    submit_btn.click(
        main,
        [prob1],
        [label,impplot,NER], api_name="ResText"
    )

    gr.Markdown("### Click on any of the examples below to see if they contain resilience messaging or not:")
    gr.Examples([["Please stay at home and avoid unnecessary trips."],["Please stay at home and avoid unnecessary trips. We will survive this."],["We will survive this."],["Watch today’s news briefing with the latest updates on COVID-19 in Connecticut."],["So let's keep doing what we know works. Let's stay strong, and let's beat this virus. I know we can, and I know we can come out stronger on the other side."],["It is really wonderful how much resilience there is in human nature. Let any obstructing cause, no matter what, be removed in any way, even by death, and we fly back to first principles of hope and enjoyment."],["Resilience is accepting your new reality, even if it’s less good than the one you had before. You can fight it, you can do nothing but scream about what you’ve lost, or you can accept that and try to put together something that’s good."],["You survived all of the days you thought you couldn't, never underestimate your resilience."],["Like tiny seeds with potent power to push through tough ground and become mighty trees, we hold innate reserves of unimaginable strength. We are resilient."]], [prob1], [label,impplot,NER], main, cache_examples=True)
    
demo.launch()