Upload handler.py

handler.py

@@ -0,0 +1,95 @@
+from models.pairwise_model import *
+from features.text_utils import *
+import regex as re
+from models.bm25_utils import BM25Gensim
+from models.qa_model import *
+from tqdm.auto import tqdm
+tqdm.pandas()
+from datasets import load_dataset
+from transformers import pipeline
+
+class EndpointHandler():
+    def __init__(self, path=""):
+        df_wiki_windows = load_dataset("foxxy-hm/e2eqa-wiki",  data_files="processed/wikipedia_20220620_cleaned_v2.csv")["train"].to_pandas()
+        df_wiki = load_dataset("foxxy-hm/e2eqa-wiki",  data_files="wikipedia_20220620_short.csv")["train"].to_pandas()
+        df_wiki.title = df_wiki.title.apply(str)
+
+        entity_dict = load_dataset("foxxy-hm/e2eqa-wiki",  data_files="processed/entities.json")["train"].to_dict()
+        new_dict = dict()
+        for key, val in entity_dict.items():
+            val = val[0].replace("wiki/", "").replace("_", " ")
+            entity_dict[key] = val
+            key = preprocess(key)
+            new_dict[key.lower()] = val
+        entity_dict.update(new_dict)
+        title2idx = dict([(x.strip(), y) for x, y in zip(df_wiki.title, df_wiki.index.values)])
+
+        qa_model = QAEnsembleModel("nguyenvulebinh/vi-mrc-large", ["qa_model_robust.bin"], entity_dict)
+        pairwise_model_stage1 = PairwiseModel("nguyenvulebinh/vi-mrc-base")
+        pairwise_model_stage1.load_state_dict(torch.load("pairwise_v2.bin", map_location=torch.device('cpu')))
+        pairwise_model_stage1.eval()
+
+        pairwise_model_stage2 = PairwiseModel("nguyenvulebinh/vi-mrc-base")
+        pairwise_model_stage2.load_state_dict(torch.load("pairwise_stage2_seed0.bin", map_location=torch.device('cpu')))
+
+        bm25_model_stage1 = BM25Gensim("bm25_stage1/", entity_dict, title2idx)
+        bm25_model_stage2_full = BM25Gensim("bm25_stage2/full_text/", entity_dict, title2idx)
+        bm25_model_stage2_title = BM25Gensim("bm25_stage2/title/", entity_dict, title2idx)
+
+        self.qa_model = qa_model
+        self.pairwise_model_stage1 = pairwise_model_stage1
+        self.pairwise_model_stage2 = pairwise_model_stage2
+        self.bm25_model_stage1 = bm25_model_stage1
+        self.bm25_model_stage2_full = bm25_model_stage2_full
+        self.bm25_model_stage2_title = bm25_model_stage2_title
+    
+    def get_answer_e2e(self, question):
+        query = preprocess(question).lower()
+        top_n, bm25_scores = self.bm25_model_stage1.get_topk_stage1(query, topk=200)
+        titles = [preprocess(df_wiki_windows.title.values[i]) for i in top_n]
+        texts = [preprocess(df_wiki_windows.text.values[i]) for i in top_n]
+
+        question = preprocess(question)
+        ranking_preds = self.pairwise_model_stage1.stage1_ranking(question, texts)
+        ranking_scores = ranking_preds * bm25_scores
+
+        best_idxs = np.argsort(ranking_scores)[-10:]
+        ranking_scores = np.array(ranking_scores)[best_idxs]
+        texts = np.array(texts)[best_idxs]
+        best_answer = self.qa_model(question, texts, ranking_scores)
+        if best_answer is None:
+            return "Chịu"
+        bm25_answer = preprocess(str(best_answer).lower(), max_length=128, remove_puncts=True)
+
+        if not check_number(bm25_answer):
+            bm25_question = preprocess(str(question).lower(), max_length=128, remove_puncts=True)
+            bm25_question_answer = bm25_question + " " + bm25_answer
+            candidates, scores = self.bm25_model_stage2_title.get_topk_stage2(bm25_answer, raw_answer=best_answer)
+            titles = [df_wiki.title.values[i] for i in candidates]
+            texts = [df_wiki.text.values[i] for i in candidates]
+            ranking_preds = self.pairwise_model_stage2.stage2_ranking(question, best_answer, titles, texts)
+            if ranking_preds.max() >= 0.1:
+                final_answer = titles[ranking_preds.argmax()]
+            else:
+                candidates, scores = self.bm25_model_stage2_full.get_topk_stage2(bm25_question_answer)
+                titles = [df_wiki.title.values[i] for i in candidates] + titles
+                texts = [df_wiki.text.values[i] for i in candidates] + texts
+                ranking_preds = np.concatenate(
+                    [self.pairwise_model_stage2.stage2_ranking(question, best_answer, titles, texts), ranking_preds])
+            final_answer = "wiki/"+titles[ranking_preds.argmax()].replace(" ","_")
+        else:
+            final_answer = bm25_answer.lower()
+        return final_answer
+
+    
+class InferencePipeline:
+    def __init__(self):
+        self.endpoint_handler = EndpointHandler()  # Instantiate the EndpointHandler class
+    
+    def __call__(self, question):
+        answer = self.endpoint_handler.get_answer_e2e(question)  # Call the get_answer_e2e method from EndpointHandler
+        return {"answer": answer}  # Return the answer as a dictionary
+
+
+inference_pipeline = InferencePipeline()
+pipeline = pipeline("qa-model", model=inference_pipeline, tokenizer=None)