File size: 10,279 Bytes
07681a0
 
 
 
 
 
 
 
a1c7ed3
07681a0
 
 
 
a1c7ed3
07681a0
 
 
a1c7ed3
07681a0
 
 
 
 
871bc57
07681a0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
a1c7ed3
07681a0
 
 
 
 
 
a1c7ed3
07681a0
a1c7ed3
07681a0
a1c7ed3
07681a0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6ffaa0f
 
 
07681a0
6ffaa0f
 
 
07681a0
 
 
 
 
 
1cc4127
07681a0
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""


@author: Hamza Farooq
"""


from string import punctuation
from collections import Counter
from heapq import nlargest
import os

from sentence_transformers import SentenceTransformer, CrossEncoder, util
import datetime


import streamlit as st
import matplotlib.pyplot as plt
from wordcloud import WordCloud
from matplotlib import pyplot as plt


from rank_bm25 import BM25Okapi
from sklearn.feature_extraction import _stop_words
import string
from tqdm.autonotebook import tqdm
import numpy as np
import pandas as pd
from sentence_transformers import SentenceTransformer
import scipy.spatial
import pickle
from sentence_transformers import SentenceTransformer, util
import torch





# import utils as utl

import time
import torch
import transformers
from transformers import BartTokenizer, BartForConditionalGeneration
from string import punctuation
# tr = BartTokenizer.from_pretrained('facebook/bart-large-cnn')

import numpy as np
import pandas as pd
from sentence_transformers import SentenceTransformer
import scipy.spatial


from sentence_transformers import SentenceTransformer, util
import torch



def main():




    # Settings
    st.set_page_config(layout="wide", page_title='Paris Hotel Finder', page_icon="🎈"   )
    from string import punctuation
    punctuation=punctuation+ '\n'


    from sentence_transformers import SentenceTransformer, util
    import torch
    import numpy as np
    import pandas as pd
    from sentence_transformers import SentenceTransformer
    import scipy.spatial

    from sentence_transformers import SentenceTransformer, util
    import torch
    #import os
    @st.cache(allow_output_mutation=True)
    def load_model():
        return SentenceTransformer('all-MiniLM-L6-v2'),SentenceTransformer('multi-qa-MiniLM-L6-cos-v1'),CrossEncoder('cross-encoder/ms-marco-MiniLM-L-6-v2')
    embedder,bi_encoder,cross_encoder = load_model()




    #original_title = '<p style="font-family:IBM Mono; color:Blue; font-size: 20px;">Original image</p>'
    st.title("travelle - Parisian Hotel Finder")
    with st.expander("ℹ️ - About this app", expanded=True):

        st.write(
            """
    -   travelle is a hotel search engine that allows users to enter free text query to make the search result personalized to user preference as opposed to other travel websites where a user has to spend hours going through hotel list.
    -   We use natural language processing and big data to return results customized for your preferences.
    -   A user can enter just about anything and we will narrow the results to what closely matches your requirements.
    -   For e.g. a user can enter a query like "Hotel near the Eiffel and cheaper than $300 per night with free breakfast" and we will find the closest results
    	    """
        )


    punctuation=punctuation+ '\n'


    #import os

    # embedder = SentenceTransformer('all-MiniLM-L6-v2')



    def lower_case(input_str):
        input_str = input_str.lower()
        return input_str

    df_all = pd.read_csv('paris_clean_newer.csv')


    df_combined = df_all.sort_values(['Hotel']).groupby('Hotel', sort=False).text.apply(''.join).reset_index(name='all_review')
    df_combined_paris_summary = pd.read_csv('df_combined_paris.csv')
    df_combined_paris_summary = df_combined_paris_summary[['Hotel','summary']]

    import re

    # df_combined = pd.read_csv('df_combined.csv')

    df_combined['all_review'] = df_combined['all_review'].apply(lambda x: re.sub('[^a-zA-z0-9\s]','',x))


    df_combined['all_review']= df_combined['all_review'].apply(lambda x: lower_case(x))
    df_basic = df_all[['Hotel','description','price_per_night']].drop_duplicates()
    df_basic = df_basic.merge(df_combined_paris_summary,how='left')
    df_combined_e = df_combined.merge(df_basic)
    df_combined_e['all_review'] =df_combined_e['description']+ df_combined_e['all_review'] + df_combined_e['price_per_night']

    df = df_combined_e.copy()


    df_sentences = df_combined_e.set_index("all_review")

    df_sentences = df_sentences["Hotel"].to_dict()
    df_sentences_list = list(df_sentences.keys())



    import pandas as pd
    from tqdm import tqdm
    from sentence_transformers import SentenceTransformer, util

    df_sentences_list = [str(d) for d in tqdm(df_sentences_list)]
    #
    corpus = df_sentences_list
    # corpus_embeddings = embedder.encode(corpus,show_progress_bar=True)
    corpus_embeddings = np.load('embeddings.npy')

    bi_encoder.max_seq_length = 512     #Truncate long passages to 256 tokens
    top_k = 32                          #Number of passages we want to retrieve with the bi-encoder

    #The bi-encoder will retrieve 100 documents. We use a cross-encoder, to re-rank the results list to improve the quality

    # corpus_embeddings_h = np.load('embeddings_h_r.npy')

    with open('corpus_embeddings_bi_encoder.pickle', 'rb') as pkl:
        doc_embedding = pickle.load(pkl)

    with open('tokenized_corpus.pickle', 'rb') as pkl:
        tokenized_corpus = pickle.load(pkl)

    bm25 = BM25Okapi(tokenized_corpus)
    passages = corpus




# We lower case our text and remove stop-words from indexing
    def bm25_tokenizer(text):
        tokenized_doc = []
        for token in text.lower().split():
            token = token.strip(string.punctuation)

            if len(token) > 0:
                tokenized_doc.append(token)
        return tokenized_doc


    def search(query):
        # q = [str(userinput)]
        # doc = nlp(str(userinput))

        # ent_html = displacy.render(doc, style="ent", jupyter=False)
# Display the entity visualization in the browser:
        st.markdown(query, unsafe_allow_html=True)
        ##### BM25 search (lexical search) #####
        bm25_scores = bm25.get_scores(bm25_tokenizer(query))
        top_n = np.argpartition(bm25_scores, -5)[-5:]
        bm25_hits = [{'corpus_id': idx, 'score': bm25_scores[idx]} for idx in top_n]
        bm25_hits = sorted(bm25_hits, key=lambda x: x['score'], reverse=True)

        bm25list = {}
        st.title("Top-5 lexical search (BM25) hits")
        for hit in bm25_hits[0:5]:
            row_dict = df.loc[df['all_review']== corpus[hit['corpus_id']]]

            st.subheader(row_dict['Hotel'].values[0])
            de = df_basic.loc[df_basic.Hotel == row_dict['Hotel'].values[0]]
            st.write(f'\tPrice Per night: {de.price_per_night.values[0]}')
            st.write(f'Description: {de.description.values[0]}')
            st.expander(de.description.values[0],expanded=False)
            # try:
            #     st.write('Summary')
            #     st.expander(de.summary.values[0],expanded=False)
            # except:
            #     None
            # doc = corpus[hit['corpus_id']]
            # kp.get_key_phrases(doc)

            bm25list[row_dict['Hotel'].values[0]] = de.description.values[0][0:200]

        #### Sematic Search #####
        # Encode the query using the bi-encoder and find potentially relevant passages
        question_embedding = bi_encoder.encode(query, convert_to_tensor=True)
    #     question_embedding = question_embedding.cuda()
        hits = util.semantic_search(question_embedding, corpus_embeddings, top_k=top_k)
        hits = hits[0]  # Get the hits for the first query

        ##### Re-Ranking #####
        # Now, score all retrieved passages with the cross_encoder
        cross_inp = [[query, passages[hit['corpus_id']]] for hit in hits]
        cross_scores = cross_encoder.predict(cross_inp)

        # Sort results by the cross-encoder scores
        for idx in range(len(cross_scores)):
            hits[idx]['cross-score'] = cross_scores[idx]

        # Output of top-5 hits from bi-encoder
        st.write("\n-------------------------\n")
        st.title("Top-5 Bi-Encoder Retrieval hits")
        hits = sorted(hits, key=lambda x: x['score'], reverse=True)
        for hit in hits[0:5]:
    #         st.write("\t{:.3f}\t{}".format(hit['score'], passages[hit['corpus_id']].replace("\n", " ")))
            row_dict = df.loc[df['all_review']== corpus[hit['corpus_id']]]
            st.subheader(row_dict['Hotel'].values[0])
            de = df_basic.loc[df_basic.Hotel == row_dict['Hotel'].values[0]]
            st.write(f'\tPrice Per night: {de.price_per_night.values[0]}')
            st.write(f'Description: {de.description.values[0]}')
            st.expander(de.description.values[0])
            # try:
            #     st.write('Summary')
            #     st.expander(de.summary.values[0],expanded=False)
            # except:
            #     None

        # Output of top-5 hits from re-ranker
        st.write("\n-------------------------\n")
        st.title("Top-5 Cross-Encoder Re-ranker hits")
        hits = sorted(hits, key=lambda x: x['cross-score'], reverse=True)
        for hit in hits[0:5]:
    #         st.write("\t{:.3f}\t{}".format(hit['cross-score'], passages[hit['corpus_id']].replace("\n", " ")))
            row_dict = df.loc[df['all_review']== corpus[hit['corpus_id']]]
            st.subheader(row_dict['Hotel'].values[0])
            de = df_basic.loc[df_basic.Hotel == row_dict['Hotel'].values[0]]
            st.write(f'\tPrice Per night: {de.price_per_night.values[0]}')
            st.write(f'Description: {de.description.values[0]}')
            st.expander(de.description.values[0])
            # try:
            #     st.write('Summary')
            #     st.expander(de.summary.values[0],expanded=False)
            # except:
            #     None




    sampletext = 'e.g. Hotel near Eiffel Tower with big rooms'
    userinput = st.text_input('Tell us what are you looking in your hotel?','e.g. Hotel near Eiffel Tower with big rooms',autocomplete="on")
    # da = st.date_input(
    #     "Date Check-in",
    #     datetime.date(2023, 6, 3))

    # dst = st.date_input(
    #     "Date Check-out",
    #     datetime.date(2023, 6, 8))


    if not userinput or userinput == sampletext:
        st.write("Please enter a query to get results")
    else:
        query = [str(userinput)]
        # doc = nlp(str(userinput))
        search(str(userinput))

        # We use cosine-similarity and torch.topk to find the highest 5 scores

if __name__ == '__main__':
    main()