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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| #!/usr/bin/env python2.7 | ||
| import sys, os, json, logging, urllib, urllib2, codecs, traceback | ||
| import textprocessor | ||
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| class DBpedia(textprocessor.TextProcessor): | ||
| """ | ||
| annotates texts using DBpedia Spotlight | ||
| """ | ||
|
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| def _basic_params(self): | ||
| self.name = "dbpedia" | ||
| self.dry_run = False | ||
| self.require_stopwords = False | ||
|
|
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| def _get_annotated(self, text, confidence = 0.2, support = 20): | ||
| values = {'text': text[0:10000].encode('utf-8'), | ||
| 'confidence': confidence, | ||
| 'support': support} | ||
| data = urllib.urlencode(values) | ||
| req = urllib2.Request(self.url, data, self.headers) | ||
| response = urllib2.urlopen(req) | ||
| annotation = response.read() | ||
| encoding = req.headers.get('content-type', 'charset=utf8').split('charset=')[-1] | ||
|
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| return unicode(annotation, encoding) | ||
|
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| def process(self): | ||
| """ | ||
| create JSON files with named entity recognition by DBpedia | ||
| """ | ||
|
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| logging.info("beginning annotation") | ||
|
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| self.url = "http://spotlight.dbpedia.org/rest/annotate" | ||
| self.headers = {'Accept': 'application/json', 'content-type': 'application/x-www-form-urlencoded'} | ||
|
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||
| annotated = {} | ||
| if not self.dry_run: | ||
| for filename in self.files: | ||
| logging.info("processing " + filename) | ||
| self.update_progress() | ||
| try: | ||
| annotated_filename = filename.replace(".txt", "_dbpedia.json") | ||
| if os.path.exists(annotated_filename): | ||
| annotated[annotated_filename] = filename | ||
| else: | ||
| with codecs.open(filename, 'r', encoding='utf-8') as f: | ||
| annotation = self._get_annotated(f.read()) | ||
| if len(annotation) > 0: | ||
| annotated[annotated_filename] = filename | ||
| with codecs.open(annotated_filename, 'w', encoding='utf-8') as out: | ||
| out.write(annotation) | ||
| except (KeyboardInterrupt, SystemExit): | ||
| raise | ||
| except: | ||
| logging.error(traceback.format_exc()) | ||
| else: | ||
| for filename in self.files: | ||
| annotated_filename = filename.replace(".txt", "_dbpedia.json") | ||
| if os.path.exists(annotated_filename): | ||
| annotated[annotated_filename] = filename | ||
|
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| uris_to_docs = {} | ||
| for json_annotation, filename in annotated.iteritems(): | ||
| itemID = self.metadata[filename]["itemID"] | ||
| notes = json.load(file(json_annotation)) | ||
| entities = notes.get("Resources", []) | ||
| for entity in entities: | ||
| uri = entity.get("@URI", "http://dbpedia.org/resource/") | ||
| if not uri in uris_to_docs: | ||
| uris_to_docs[uri] = {} | ||
| if not itemID in uris_to_docs[uri]: | ||
| uris_to_docs[uri][itemID] = 0 | ||
| uris_to_docs[uri][itemID] += 1 | ||
|
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| filtered_uris = {} | ||
| weights = [] | ||
| for uri, items in uris_to_docs.iteritems(): | ||
| weights.append(sum(items.values())) | ||
| weights.sort() | ||
| min_weight = weights[max(-100, -len(weights))] | ||
|
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| for uri, items in uris_to_docs.iteritems(): | ||
| if sum(items.values()) > min_weight: | ||
| filtered_uris[uri] = items | ||
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| # params = {"DATA": json.dumps(uris_to_docs)} | ||
| params = {"URIS_TO_DOCS": json.dumps(filtered_uris)} | ||
| self.write_html(params) | ||
|
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| logging.info("finished") | ||
|
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|
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| if __name__ == "__main__": | ||
| try: | ||
| processor = DBpedia(track_progress=True) | ||
| processor.process() | ||
| except: | ||
| logging.error(traceback.format_exc()) |
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