The sptr from jerrygaolondon

improve frequency feature by Solr proximity search for multi-word term (MWT)

One of significant challenge of MWT recognition is the coordinated variant. Most of statistical based term recognition algorithms rely on term frequency in corpus as important feature. However, term coordinated variants can affect the performance with lower recall. Solr proximity searches can potentially improve recall and thus may improve the accuracy of related statistic metrics. This proximity based frequency is referred as 'sloppyFreq'.

"To perform a proximity search, add the tilde character ~ and a numeric value to the end of a search phrase. For example, to search for a "apache" and "jakarta" within 10 words of each other in a document, use the search: "jakarta apache"~10 The distance referred to here is the number of term movements needed to match the specified phrase. In the example above, if "apache" and "jakarta" were 10 spaces apart in a field, but "apache" appeared before "jakarta", more than 10 term movements would be required to move the terms together and position "apache" to the right of "jakarta" with a space in between."
https://lucene.apache.org/solr/guide/6_6/the-standard-query-parser.html

see also performance concerns in https://www.searchtechnologies.com/blog/relevancy-ranking-course-part-3

see also the referred "slop factor" in https://lucidworks.com/2009/09/02/optimizing-findability-in-lucene-and-solr/

MaxRetryError


2016-01-11 11:44:29,085 [MainThread  ] - IndustryTermRecogniser - INFO - Term variation detection and aggregation...
Traceback (most recent call last):
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/connection.py", line 135, in _new_conn
    (self.host, self.port), self.timeout, **extra_kw)
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/util/connection.py", line 90, in create_connection
    raise err
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/util/connection.py", line 80, in create_connection
    sock.connect(sa)
OSError: [Errno 99] Cannot assign requested address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/connectionpool.py", line 559, in urlopen
    body=body, headers=headers)
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/connectionpool.py", line 353, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/mnt/Python34/lib/python3.4/http/client.py", line 1088, in request
    self._send_request(method, url, body, headers)
  File "/mnt/Python34/lib/python3.4/http/client.py", line 1126, in _send_request
    self.endheaders(body)
  File "/mnt/Python34/lib/python3.4/http/client.py", line 1084, in endheaders
    self._send_output(message_body)
  File "/mnt/Python34/lib/python3.4/http/client.py", line 922, in _send_output
    self.send(msg)
  File "/mnt/Python34/lib/python3.4/http/client.py", line 857, in send
    self.connect()
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/connection.py", line 160, in connect
    conn = self._new_conn()
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/connection.py", line 144, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.HTTPConnection object at 0x7fb830c8f8d0>: Failed to establish a new connection: [Errno 99] Cannot assign requested address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/mnt/Python34/lib/python3.4/site-packages/requests/adapters.py", line 370, in send
    timeout=timeout
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/connectionpool.py", line 609, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/mnt/Python34/lib/python3.4/site-packages/requests/packages/urllib3/util/retry.py", line 271, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
requests.packages.urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='oakanalysis.shef.ac.uk', port=8983): Max retries exceeded with url: /solr/tatasteel/analysis/field?analysis.fieldvalue=auto+detection&wt=json&analysis.fieldtype=industry_term_normaliser (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7fb830c8f8d0>: Failed to establish a new connection: [Errno 99] Cannot assign requested address',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/integration.py", line 145, in <module>
    trTagger.terminology_tagging()
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/IndustryTermRecogniser.py", line 165, in terminology_tagging
    self.synonym_aggregation(final_term_set)
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/IndustryTermRecogniser.py", line 281, in synonym_aggregation
    norm_term_dict = dict((term, self.solrClient.get_industry_term_field_analysis(term)) for term in terms)
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/IndustryTermRecogniser.py", line 281, in <genexpr>
    norm_term_dict = dict((term, self.solrClient.get_industry_term_field_analysis(term)) for term in terms)
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/SolrClient.py", line 381, in get_industry_term_field_analysis
    analysis_result = self.field_analysis(term, field_type=pfield_type)
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/SolrClient.py", line 371, in field_analysis
    response=self._send_request('GET', path)
  File "/mnt/oakanalysis/shared/SPEEAK-PC-TermRecognition/src/SolrClient.py", line 401, in _send_request
    response = requests.request(method=method, url=urljoin(url, path),headers=headers,data=data)
  File "/mnt/Python34/lib/python3.4/site-packages/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/mnt/Python34/lib/python3.4/site-packages/requests/sessions.py", line 468, in request
    resp = self.send(prep, **send_kwargs)
  File "/mnt/Python34/lib/python3.4/site-packages/requests/sessions.py", line 576, in send
    r = adapter.send(request, **kwargs)
  File "/mnt/Python34/lib/python3.4/site-packages/requests/adapters.py", line 423, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='xxx.shef.ac.uk', port=8983): Max retries exceeded with url: /solr/tatasteel/analysis/field?analysis.fieldvalue=auto+detection&wt=json&analysis.fieldtype=industry_term_normaliser (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7fb830c8f8d0>: Failed to establish a new connection: [Errno 99] Cannot assign requested address',))

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improve frequency feature by Solr proximity search for multi-word term (MWT)

MaxRetryError

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