1 | # coding: utf-8 |
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2 | |
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3 | from django.shortcuts import render |
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4 | |
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5 | from django.conf import settings |
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6 | |
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7 | from django.http import HttpResponse, HttpResponseRedirect, HttpResponseServerError, StreamingHttpResponse |
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8 | |
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9 | import json |
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10 | |
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11 | from utils import colorlib |
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12 | from ldac2vsm import * |
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13 | import itertools |
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14 | from vsm.corpus import Corpus |
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15 | from vsm.model.ldacgsmulti import LdaCgsMulti as LCM |
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16 | from vsm.viewer.ldagibbsviewer import LDAGibbsViewer as LDAViewer |
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17 | from vsm.viewer.wrappers import doc_label_name |
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18 | from django.core import serializers |
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19 | |
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20 | from django.views.generic import TemplateView |
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21 | from django.core.urlresolvers import reverse |
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22 | |
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23 | from StringIO import StringIO |
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24 | import csv |
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25 | |
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26 | from django_topic_explorer.settings import URL_COMUN |
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27 | from django.utils.safestring import mark_safe |
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28 | from django_topic_explorer.settings import FILES_PATH |
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29 | |
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30 | #path = settings.PATH |
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31 | corpus_file = settings.CORPUS_FILE |
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32 | #context_type = settings.CONTEXT_TYPE |
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33 | context_type = 'propesta' |
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34 | #model_pattern = settings.MODEL_PATTERN |
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35 | topics = settings.TOPICS |
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36 | #corpus_name = settings.CORPUS_NAME |
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37 | icons = settings.ICONS |
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38 | |
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39 | corpus_link = settings.CORPUS_LINK |
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40 | topics_range = [int(item) for item in settings.TOPICS.split(',')] |
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41 | doc_title_format = settings.DOC_TITTLE_FORMAT |
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42 | doc_url_format = settings.DOC_URL_FORMAT |
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43 | |
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44 | #global lda_m, lda_v |
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45 | |
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46 | # Integración LDA-c topic_explorer |
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47 | lda_c,lda_m = corpus_model() |
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48 | #lda_c = Corpus.load(corpus_file) |
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49 | #lda_c.save('/home/jredondo/tmp/corpus.npz') |
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50 | lda_v = LDAViewer(lda_c, lda_m) |
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51 | |
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52 | #lda_m = LCM.load(model_pattern.format(k)) |
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53 | label = lambda x: x |
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54 | |
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55 | def dump_exception(): |
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56 | import sys,traceback |
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57 | exc_type, exc_value, exc_traceback = sys.exc_info() |
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58 | print "*** print_tb:" |
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59 | traceback.print_tb(exc_traceback, limit=1, file=sys.stdout) |
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60 | print "*** print_exception:" |
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61 | traceback.print_exception(exc_type, exc_value, exc_traceback, limit=2, file=sys.stdout) |
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62 | return HttpResponseServerError(str(exc_value)) |
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63 | |
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64 | |
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65 | def doc_topic_csv(request, doc_id): |
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66 | data = lda_v.doc_topics(doc_id) |
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67 | |
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68 | output=StringIO() |
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69 | writer = csv.writer(output) |
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70 | writer.writerow(['topic','prob']) |
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71 | writer.writerows([(t, "%6f" % p) for t,p in data]) |
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72 | |
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73 | return HttpResponse(output.getvalue()) |
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74 | |
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75 | def doc_csv(request, k_param,doc_id,threshold=0.2): |
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76 | #lda_m = LCM.load(model_pattern.format(k_param)) |
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77 | #lda_v = LDAViewer(lda_c, lda_m) |
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78 | data = lda_v.sim_doc_doc(doc_id) |
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79 | |
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80 | output=StringIO() |
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81 | writer = csv.writer(output) |
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82 | writer.writerow(['doc','prob']) |
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83 | writer.writerows([(d, "%6f" % p) for d,p in data if p > threshold]) |
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84 | |
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85 | return HttpResponse(output.getvalue()) |
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86 | |
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87 | def topic_json(request,k_param,topic_no, N=40): |
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88 | #global lda_v |
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89 | #lda_m = LCM.load(model_pattern.format(k_param)) |
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90 | #lda_v = LDAViewer(lda_c, lda_m) |
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91 | try: |
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92 | N = int(request.query.n) |
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93 | except: |
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94 | pass |
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95 | |
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96 | if N > 0: |
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97 | data = lda_v.dist_top_doc([int(topic_no)])[:N] |
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98 | else: |
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99 | data = lda_v.dist_top_doc([int(topic_no)])[N:] |
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100 | data = reversed(data) |
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101 | |
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102 | docs = [doc for doc,prob in data] |
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103 | doc_topics_mat = lda_v.doc_topics(docs) |
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104 | |
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105 | js = [] |
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106 | for doc_prob, topics in zip(data, doc_topics_mat): |
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107 | doc, prob = doc_prob |
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108 | js.append({'doc' : doc, 'label': label(doc), 'prob' : 1-prob, |
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109 | 'topics' : dict([(str(t), p) for t,p in topics])}) |
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110 | return HttpResponse(json.dumps(js)) |
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111 | |
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112 | def doc_topics(request,doc_id, N=40): |
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113 | try: |
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114 | try: |
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115 | N = int(request.query.n) |
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116 | except: |
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117 | pass |
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118 | if N > 0: |
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119 | data = lda_v.dist_doc_doc(doc_id)[:N] |
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120 | else: |
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121 | data = lda_v.dist_doc_doc(doc_id)[N:] |
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122 | data = reversed(data) |
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123 | |
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124 | docs = [doc for doc,prob in data] |
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125 | doc_topics_mat = lda_v.doc_topics(docs) |
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126 | |
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127 | js = [] |
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128 | for doc_prob, topics in zip(data, doc_topics_mat): |
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129 | doc, prob = doc_prob |
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130 | js.append({'doc' : doc, 'label': label(doc), 'prob' : 1-prob, |
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131 | 'topics' : dict([(str(t), p) for t,p in topics])}) |
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132 | return HttpResponse(json.dumps(js)) |
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133 | except: |
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134 | return dump_exception() |
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135 | |
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136 | def topics(request): |
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137 | try: |
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138 | js=populateJson() |
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139 | return HttpResponse(json.dumps(js)) |
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140 | except: |
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141 | return dump_exception() |
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142 | |
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143 | def populateJson(): |
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144 | # populate entropy values |
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145 | data = lda_v.topic_oscillations() |
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146 | |
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147 | colors = [itertools.cycle(cs) for cs in zip(*colorlib.brew(3,n_cls=4))] |
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148 | factor = len(data) / len(colors) |
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149 | |
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150 | js = {} |
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151 | for rank,topic_H in enumerate(data): |
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152 | topic, H = topic_H |
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153 | js[str(topic)] = { |
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154 | "H" : H, |
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155 | "color" : colors[min(rank / factor, len(colors)-1)].next() |
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156 | } |
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157 | |
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158 | # populate word values |
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159 | data = lda_v.topics() |
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160 | for i,topic in enumerate(data): |
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161 | js[str(i)].update({'words' : dict([(w.decode('unicode-escape'), p) for w,p in topic[:20]])}) |
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162 | return js |
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163 | |
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164 | |
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165 | def docs(request): |
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166 | try: |
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167 | docs = lda_v.corpus.view_metadata(context_type)[doc_label_name(context_type)] |
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168 | js = list() |
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169 | for doc in docs: |
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170 | js.append({ |
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171 | 'id': doc, |
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172 | 'label' : label(doc) |
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173 | }) |
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174 | |
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175 | return HttpResponse(json.dumps(js)) |
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176 | except: |
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177 | return dump_exception() |
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178 | |
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179 | def index(request): |
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180 | global lda_m,lda_v |
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181 | #lda_m = LCM.load(model_pattern.format(10)) |
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182 | #lda_v = LDAViewer(lda_c, lda_m) |
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183 | template_name = 'topic_explorer/index.html' |
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184 | return render(request,template_name, |
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185 | {'filename':None, |
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186 | #'corpus_name' : corpus_name, |
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187 | 'corpus_link' : corpus_link, |
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188 | 'context_type' : context_type, |
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189 | 'topics_range' : topics_range, |
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190 | 'doc_title_format' : doc_title_format, |
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191 | 'doc_url_format' : doc_url_format}) |
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192 | |
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193 | def visualize(request,k_param,filename=None,topic_no=None): |
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194 | global lda_m,lda_v |
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195 | #lda_m = LCM.load(model_pattern.format(k_param)) |
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196 | #lda_v = LDAViewer(lda_c, lda_m) |
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197 | template_name = 'topic_explorer/index.html' |
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198 | return render(request,template_name, |
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199 | {'filename':filename, |
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200 | 'k_param':k_param, |
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201 | 'topic_no':topic_no, |
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202 | #'corpus_name' : corpus_name, |
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203 | 'corpus_link' : corpus_link, |
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204 | 'context_type' : context_type, |
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205 | 'topics_range' : topics_range, |
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206 | 'doc_title_format' : doc_title_format, |
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207 | 'doc_url_format' : doc_url_format}) |
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208 | |
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209 | class IrTopic(TemplateView): |
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210 | template_name='topic_explorer/verTopico.html' |
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211 | def post(self, request, *args, **kwargs): |
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212 | propuesta = request.POST['nombre_propuesta'] |
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213 | #url = reverse('verTopicos') |
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214 | #Obtnener json |
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215 | Topic_Json = populateJson() |
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216 | Topic_Json = json.dumps(Topic_Json) |
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217 | topicos = json.loads(Topic_Json) |
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218 | mi_color = [] |
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219 | mi_color = self.obtenerValores(topicos) |
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220 | mi_color = json.dumps(mi_color) |
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221 | topicos = json.dumps(topicos) |
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222 | #print topicos |
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223 | #carga el pre-procesado del archivo en una variable |
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224 | texto='' |
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225 | direccion = FILES_PATH + '/'+ propuesta |
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226 | try: |
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227 | archivo = open(direccion,'r') |
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228 | texto=archivo.read() |
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229 | archivo.close() |
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230 | except: |
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231 | return dump_exception() |
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232 | texto='No se encontro el documento' |
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233 | return render(request,self.template_name, |
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234 | {'topicos':topicos, |
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235 | 'propuesta':propuesta, |
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236 | 'color':mi_color, |
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237 | 'texto':texto}) |
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238 | |
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239 | def obtenerValores(self,topicos):#funcion para obtener los colores del json |
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240 | my_topic=[] |
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241 | for x in topicos: |
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242 | my_topic.append(topicos[x]['color']) |
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243 | return my_topic |
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