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| import gradio as gr | |
| import http.client | |
| import json | |
| from bs4 import BeautifulSoup as bs | |
| import re | |
| import pymongo | |
| import torch | |
| import spacy | |
| from spacy import displacy | |
| # from pymongo import MongoClient | |
| from transformers import AutoTokenizer | |
| tokenizer = AutoTokenizer.from_pretrained("law-ai/InLegalBERT") | |
| from transformers import BertForTokenClassification | |
| class BertModel(torch.nn.Module): | |
| def __init__(self): | |
| super(BertModel, self).__init__() | |
| self.bert = BertForTokenClassification.from_pretrained('law-ai/InLegalBERT', num_labels=14) | |
| def forward(self, input_id, mask, label): | |
| output = self.bert(input_ids=input_id, attention_mask=mask, labels=label, return_dict=False) | |
| return output | |
| model_preamble = BertModel() | |
| model_preamble = torch.load("nerbert_preamble.pt", map_location=torch.device('cpu')) | |
| model_judgment = BertModel() | |
| model_judgment = torch.load("nerbert.pt", map_location=torch.device('cpu')) | |
| unique_labels_preamble = {'I-PETITIONER', 'I-COURT', 'B-COURT', 'B-JUDGE', 'I-LAWYER', 'B-RESPONDENT', 'I-JUDGE', 'B-PETITIONER', 'I-RESPONDENT', 'B-LAWYER', 'O'} | |
| unique_labels_judgment = {'B-WITNESS', 'I-PETITIONER', 'I-JUDGE', 'B-STATUTE', 'B-OTHER_PERSON', 'B-CASE_NUMBER', 'I-ORG', 'I-PRECEDENT', 'I-RESPONDENT', 'B-PROVISION', 'O', 'I-WITNESS', 'B-ORG', 'I-COURT', 'B-RESPONDENT', 'I-DATE', 'B-GPE', 'I-CASE_NUMBER', 'B-DATE', 'B-PRECEDENT', 'I-GPE', 'B-COURT', 'B-JUDGE', 'I-STATUTE', 'B-PETITIONER', 'I-OTHER_PERSON', 'I-PROVISION'} | |
| labels_to_ids_preamble = {k: v for v, k in enumerate(sorted(unique_labels_preamble))} | |
| ids_to_labels_preamble = {v: k for v, k in enumerate(sorted(unique_labels_preamble))} | |
| labels_to_ids_judgment = {k: v for v, k in enumerate(sorted(unique_labels_judgment))} | |
| ids_to_labels_judgment = {v: k for v, k in enumerate(sorted(unique_labels_judgment))} | |
| label_all_tokens = True | |
| def align_word_ids(texts): | |
| tokenized_inputs = tokenizer(texts, padding='max_length', max_length=512, truncation=True) | |
| word_ids = tokenized_inputs.word_ids() | |
| previous_word_idx = None | |
| label_ids = [] | |
| for word_idx in word_ids: | |
| if word_idx is None: | |
| label_ids.append(-100) | |
| elif word_idx != previous_word_idx: | |
| try: | |
| label_ids.append(1) | |
| except: | |
| label_ids.append(-100) | |
| else: | |
| try: | |
| label_ids.append(1 if label_all_tokens else -100) | |
| except: | |
| label_ids.append(-100) | |
| previous_word_idx = word_idx | |
| return label_ids | |
| def evaluate_one_preamble(model, sentence): | |
| use_cuda = torch.cuda.is_available() | |
| device = torch.device("cuda" if use_cuda else "cpu") | |
| text = tokenizer(sentence, padding='max_length', max_length = 512, truncation=True, return_tensors="pt") | |
| mask = text['attention_mask'].to(device) | |
| input_id = text['input_ids'].to(device) | |
| label_ids = torch.Tensor(align_word_ids(sentence)).unsqueeze(0).to(device) | |
| logits = model(input_id, mask, None) | |
| logits_clean = logits[0][label_ids != -100] | |
| predictions = logits_clean.argmax(dim=1).tolist() | |
| prediction_label = [ids_to_labels_preamble[i] for i in predictions] | |
| return (prediction_label,text) | |
| def evaluate_one_text(model, sentence): | |
| use_cuda = torch.cuda.is_available() | |
| device = torch.device("cuda" if use_cuda else "cpu") | |
| text = tokenizer(sentence, padding='max_length', max_length = 512, truncation=True, return_tensors="pt") | |
| mask = text['attention_mask'].to(device) | |
| input_id = text['input_ids'].to(device) | |
| label_ids = torch.Tensor(align_word_ids(sentence)).unsqueeze(0).to(device) | |
| logits = model(input_id, mask, None) | |
| logits_clean = logits[0][label_ids != -100] | |
| predictions = logits_clean.argmax(dim=1).tolist() | |
| prediction_label = [ids_to_labels_judgment[i] for i in predictions] | |
| return (prediction_label,text) | |
| def cleanhtml(raw_html): | |
| CLEANR = re.compile('<.*?>') | |
| cleantext = re.sub(CLEANR, '', raw_html) | |
| return cleantext | |
| nlp = spacy.blank("en") | |
| def judgtext_analysis(text): | |
| conn = http.client.HTTPSConnection("api.indiankanoon.org") | |
| payload = "{}" | |
| headers = { | |
| 'Authorization': 'Token ea381f5b51f9d55aaa71dfe6a90606e9b89f942a', | |
| 'Content-Type': 'application/json' | |
| } | |
| #Parse text and retrieve the document id | |
| d = text.split('/') | |
| docid = d[4] | |
| endpoint="/doc/"+str(docid)+"/" | |
| conn.request("POST", endpoint, payload, headers) | |
| res = conn.getresponse() | |
| data = res.read() | |
| data = data.decode("utf-8") | |
| data_dict = json.loads(data) | |
| soup = bs(data_dict["doc"], 'html.parser') | |
| judgment_text="" | |
| for tag in soup.find_all(['p', 'blockquote']): | |
| judgment_text+=(tag.text)+" " | |
| judgment_text = cleanhtml(str(judgment_text)) | |
| preamble_text = soup.find("pre") | |
| preamble_text = cleanhtml(str(preamble_text)) | |
| judgment_sentences = sentences = re.split(r' *[\.\?!][\'"\)\]]* *', judgment_text) | |
| finalentities=[] | |
| finaltext="" | |
| labellist,text_tokenized = evaluate_one_preamble(model_preamble,preamble_text) | |
| tokenlist = tokenizer.convert_ids_to_tokens(text_tokenized["input_ids"][0]) | |
| finallist=[] | |
| for i in range(1,len(tokenlist)): | |
| if(tokenlist[i]=='[SEP]'): | |
| break | |
| finallist.append(tokenlist[i]) | |
| finalstring="" | |
| i=0 | |
| finallistshortened=[] | |
| labellistshortened=[] | |
| while(i<len(finallist)): | |
| word="" | |
| word+=finallist[i] | |
| j=i+1 | |
| labellistshortened.append(labellist[i]) | |
| while(j<len(finallist) and finallist[j].startswith("##")): | |
| word+=finallist[j][2:] | |
| j+=1 | |
| finalstring+=word | |
| finallistshortened.append(word) | |
| finalstring+=" " | |
| i=j | |
| text="" | |
| entities=[] | |
| i=0 | |
| while(i<len(finallistshortened)): | |
| word="" | |
| start=len(text) | |
| word+=finallistshortened[i]+" " | |
| j=i+1 | |
| if(labellistshortened[i]=="O"): | |
| i+=1 | |
| text+=word+" " | |
| continue | |
| entity = labellistshortened[i][2:] | |
| ientity = "I-"+entity | |
| while(j<len(finallistshortened) and labellistshortened[j]==ientity): | |
| word+=finallistshortened[j]+ " " | |
| j+=1 | |
| text+=word+" " | |
| prevstart=len(finaltext) | |
| end=len(text)-2 | |
| finalstring+=text + ". " | |
| entities.append((entity,start,end)) | |
| finalentities.append((entity,prevstart + start,prevstart + end)) | |
| i=j | |
| finaltext+=text + ". " | |
| for sentence in judgment_sentences: | |
| labellist,text_tokenized = evaluate_one_text(model_judgment,sentence) | |
| tokenlist = tokenizer.convert_ids_to_tokens(text_tokenized["input_ids"][0]) | |
| finallist=[] | |
| for i in range(1,len(tokenlist)): | |
| if(tokenlist[i]=='[SEP]'): | |
| break | |
| finallist.append(tokenlist[i]) | |
| finalstring="" | |
| i=0 | |
| finallistshortened=[] | |
| labellistshortened=[] | |
| while(i<len(finallist)): | |
| word="" | |
| word+=finallist[i] | |
| j=i+1 | |
| labellistshortened.append(labellist[i]) | |
| while(j<len(finallist) and finallist[j].startswith("##")): | |
| word+=finallist[j][2:] | |
| j+=1 | |
| finalstring+=word | |
| finallistshortened.append(word) | |
| finalstring+=" " | |
| i=j | |
| text="" | |
| entities=[] | |
| i=0 | |
| while(i<len(finallistshortened)): | |
| word="" | |
| start=len(text) | |
| word+=finallistshortened[i]+" " | |
| j=i+1 | |
| if(labellistshortened[i]=="O"): | |
| i+=1 | |
| text+=word+" " | |
| continue | |
| entity = labellistshortened[i][2:] | |
| ientity = "I-"+entity | |
| while(j<len(finallistshortened) and labellistshortened[j]==ientity): | |
| word+=finallistshortened[j]+ " " | |
| j+=1 | |
| text+=word+" " | |
| prevstart=len(finaltext) | |
| end=len(text)-2 | |
| finalstring+=text + ". " | |
| entities.append((entity,start,end)) | |
| finalentities.append((entity,prevstart + start,prevstart + end)) | |
| i=j | |
| finaltext+=text + ". " | |
| doc = nlp(finaltext) | |
| ents = [] | |
| for ee in finalentities: | |
| ents.append(doc.char_span(ee[1], ee[2], ee[0])) | |
| doc.ents = ents | |
| #logic for repository | |
| # cluster = MongoClient("mongodb+srv://testuser:[email protected]/?retryWrites=true&w=majority") | |
| # db = cluster["nerdb"] | |
| # collection = db["named_entities"] | |
| content = displacy.render(doc, style='ent') | |
| # extsoup = bs(content, 'html.parser') | |
| # txtlist=[] | |
| # entlist=[] | |
| # for h in extsoup.findAll('div'): | |
| # mark = h.findAll('mark') | |
| # span = h.findAll('span') | |
| # for i in mark: | |
| # txt = i.find(text=True) | |
| # txt = txt.replace("\n",""); | |
| # txt = txt.strip(); | |
| # txtlist.append(str(txt)) | |
| # for i in span: | |
| # ent = i.find(text=True) | |
| # entlist.append(str(ent)) | |
| # zipped = zip(txtlist, entlist) | |
| # ziplist = list(zipped) | |
| # post = {"api_docid":docid, "document_text":finaltext, "named_entities":ziplist, "entities_indices": finalentities} | |
| # collection.insert_one(post) | |
| html = displacy.render(doc, style="ent", page = True) | |
| html = ( | |
| "" | |
| + html | |
| + "" | |
| ) | |
| pos_count = { | |
| "char_count": len(text), | |
| "token_count": 0, | |
| } | |
| pos_tokens = [] | |
| for token in doc: | |
| pos_tokens.extend([(token.text, token.pos_), (" ", None)]) | |
| return html | |
| demo = gr.Interface( | |
| judgtext_analysis, | |
| gr.Textbox(placeholder="Enter Indian Kanoon document URL here..."), | |
| ["html"], | |
| ) | |
| demo.launch(inline=False) |