import nltk import re import nltkmodule from newspaper import Article from newspaper import fulltext import requests from nltk.tokenize import word_tokenize from sentence_transformers import SentenceTransformer, models, losses, LoggingHandler import pandas as pd import numpy as np from torch.utils.data import DataLoader import math from sentence_transformers.evaluation import EmbeddingSimilarityEvaluator from sentence_transformers.readers import * from nltk.corpus import stopwords stop_words = stopwords.words('english') from sklearn.metrics.pairwise import cosine_similarity import networkx as nx from nltk.tokenize import sent_tokenize import scispacy import en_core_sci_lg import string import gradio as gr import inflect inflect_op = inflect.engine() nlp = en_core_sci_lg.load() sp = en_core_sci_lg.load() all_stopwords = sp.Defaults.stop_words def remove_stopwords(sen): sen_new = " ".join([i for i in sen if i not in stop_words]) return sen_new def keyphrase_generator(article_link, model_1, model_2, max_num_keywords): element=[] final_textrank_list=[] document=[] text_doc=[] score_list=[] sum_list=[] model_1 = SentenceTransformer(model_1) model_2 = SentenceTransformer(model_2) url = article_link html = requests.get(url).text article = fulltext(html) corpus=sent_tokenize(article) indicator_list=['concluded','concludes','in a study', 'concluding','conclude','in sum','in a recent study','therefore','thus','so','hence', 'as a result','accordingly','consequently','in short','proves that','shows that','suggests that','demonstrates that','found that','observed that', 'indicated that','suggested that','demonstrated that'] count_dict={} for l in corpus: c=0 for l2 in indicator_list: if l.find(l2)!=-1: ### then it is a substring c=1 break if c:# count_dict[l]=1 else: count_dict[l]=0 for sent, score in count_dict.items(): score_list.append(score) clean_sentences_new = pd.Series(corpus).str.replace("[^a-zA-Z]", " ", regex=True).tolist() corpus_embeddings = model_1.encode(clean_sentences_new) sim_mat = np.zeros([len(clean_sentences_new), len(clean_sentences_new)]) for i in range(len(clean_sentences_new)): len_embeddings=(len(corpus_embeddings[i])) for j in range(len(clean_sentences_new)): if i != j: if(len_embeddings == 1024): sim_mat[i][j] = cosine_similarity(corpus_embeddings[i].reshape(1,1024), corpus_embeddings[j].reshape(1,1024))[0,0] elif(len_embeddings == 768): sim_mat[i][j] = cosine_similarity(corpus_embeddings[i].reshape(1,768), corpus_embeddings[j].reshape(1,768))[0,0] nx_graph = nx.from_numpy_array(sim_mat) scores = nx.pagerank(nx_graph) sentences=((scores[i],s) for i,s in enumerate(corpus)) for elem in sentences: element.append(elem[0]) for sc, lst in zip(score_list, element): ########### taking the scores from both the lists sum1=sc+lst sum_list.append(sum1) x=sorted(((sum_list[i],s) for i,s in enumerate(corpus)), reverse=True) for elem in x: final_textrank_list.append(elem[1]) a=int((10*len(final_textrank_list))/100.0) if(a<5): total=5 else: total=int(a) for i in range(total): document.append(final_textrank_list[i]) doc=" ".join(document) for i in document: doc_1=nlp(i) text_doc.append([X.text for X in doc_1.ents]) entity_list = [item for sublist in text_doc for item in sublist] entity_list = [word for word in entity_list if not word in all_stopwords] entity_list = [word_entity for word_entity in entity_list if(inflect_op.singular_noun(word_entity) == False)] entity_list=list(dict.fromkeys(entity_list)) doc_embedding = model_2.encode([doc]) candidates=entity_list candidate_embeddings = model_2.encode(candidates) distances = cosine_similarity(doc_embedding, candidate_embeddings) top_n = max_num_keywords keyword_list = [candidates[index] for index in distances.argsort()[0][-top_n:]] keywords = '\n'.join(keyword_list) return keywords igen=gr.Interface(keyphrase_generator, inputs=[gr.components.Textbox(lines=1, placeholder="Provide an online health article web link here",value="", label="Article web link"), gr.components.Dropdown(choices=['sentence-transformers/all-mpnet-base-v2', 'sentence-transformers/all-mpnet-base-v1', 'sentence-transformers/all-distilroberta-v1', 'sentence-transformers/gtr-t5-large', 'pritamdeka/S-Bluebert-snli-multinli-stsb', 'pritamdeka/S-Biomed-Roberta-snli-multinli-stsb', 'sentence-transformers/stsb-mpnet-base-v2', 'sentence-transformers/all-roberta-large-v1', 'sentence-transformers/stsb-roberta-base-v2', 'sentence-transformers/stsb-distilroberta-base-v2', 'sentence-transformers/sentence-t5-large', 'sentence-transformers/sentence-t5-base'], type="value", value='pritamdeka/S-Biomed-Roberta-snli-multinli-stsb', label="Select any SBERT model for TextRank from the list below"), gr.components.Dropdown(choices=['sentence-transformers/paraphrase-mpnet-base-v2', 'sentence-transformers/all-mpnet-base-v1', 'sentence-transformers/paraphrase-distilroberta-base-v1', 'sentence-transformers/paraphrase-xlm-r-multilingual-v1', 'sentence-transformers/paraphrase-multilingual-mpnet-base-v2', 'sentence-transformers/paraphrase-albert-small-v2', 'sentence-transformers/paraphrase-albert-base-v2', 'sentence-transformers/paraphrase-MiniLM-L12-v2', 'sentence-transformers/paraphrase-MiniLM-L6-v2', 'sentence-transformers/all-MiniLM-L12-v2', 'sentence-transformers/all-distilroberta-v1', 'sentence-transformers/paraphrase-TinyBERT-L6-v2', 'sentence-transformers/paraphrase-MiniLM-L3-v2', 'sentence-transformers/all-MiniLM-L6-v2'], type="value", value='sentence-transformers/all-mpnet-base-v1', label="Select any SBERT model for keyphrases from the list below"), gr.components.Slider(minimum=5, maximum=30, step=1, value=10, label="Max Keywords")], outputs=gr.components.Textbox(type="text", label="Output", lines=10), theme="peach", title="Health Article Keyphrase Generator", description="Generates the keyphrases from an online health article which best describes the article. Examples are provided below for demo purposes. Choose any one example to see the results. ", examples=[ ["https://www.cancer.news/2021-12-22-mrna-vaccines-weaken-immune-system-cause-cancer.html", 'sentence-transformers/all-mpnet-base-v1', 'sentence-transformers/paraphrase-MiniLM-L12-v2', 10], ["https://www.cancer.news/2022-02-04-doctors-testifying-covid-vaccines-causing-cancer-aids.html#", 'sentence-transformers/all-mpnet-base-v1', 'sentence-transformers/all-mpnet-base-v1', 12], ["https://www.medicalnewstoday.com/articles/alzheimers-addressing-sleep-disturbance-may-alleviate-symptoms", 'pritamdeka/S-Biomed-Roberta-snli-multinli-stsb', 'sentence-transformers/all-mpnet-base-v1', 10], ["https://www.medicalnewstoday.com/articles/omicron-what-do-we-know-about-the-stealth-variant", 'pritamdeka/S-Biomed-Roberta-snli-multinli-stsb', 'sentence-transformers/all-mpnet-base-v1', 15] ], article= "The work is based on a part of the paper provided here." "\t It uses the TextRank algorithm with SBERT to first find the top ranked sentences and then extracts the keyphrases" "\t from those sentences using scispaCy and SBERT." "\t The list of SBERT models provided can be found in SBERT Pre-trained models hub." "\t The default model names are provided which can be changed from the list of models available. " "\t The value of output keyphrases can be changed. The default value is 10, minimum is 5 and a maximum value of 30.") igen.launch(share=False) ####