Comments for Andrei Zmievski http://zmievski.org Life, technology, and other good things Mon, 20 May 2013 16:48:08 +0000 hourly 1 http://wordpress.org/?v=3.4.1 Comment on Duplicates Detection with ElasticSearch by directory of professional uk companies http://zmievski.org/2011/03/duplicates-detection-with-elasticsearch/comment-page-1#comment-2817 directory of professional uk companies Mon, 20 May 2013 16:48:08 +0000 http://zmievski.org/?p=1122#comment-2817 Amazing blog! Is your theme custom made or did you download it from somewhere? A theme like yours with a few simple adjustements would really make my blog stand out. Please let me know where you got your theme. Bless you Amazing blog! Is your theme custom made or did you download it from somewhere?
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]]> Comment on Duplicates Detection with ElasticSearch by Andrei http://zmievski.org/2011/03/duplicates-detection-with-elasticsearch/comment-page-1#comment-2788 Andrei Wed, 06 Mar 2013 03:52:40 +0000 http://zmievski.org/?p=1122#comment-2788 Your project looks quite interesting, and I'm sure produces better quality results than my approach. I wish I had run across it at the time. But, I wanted to keep the number of pieces of technology as small as possible and using ElasticSearch was a quick & dirty approach that seemed to yield decent results. Your project looks quite interesting, and I’m sure produces better quality results than my approach. I wish I had run across it at the time. But, I wanted to keep the number of pieces of technology as small as possible and using ElasticSearch was a quick & dirty approach that seemed to yield decent results.

]]> Comment on Duplicates Detection with ElasticSearch by Lars Marius Garshol http://zmievski.org/2011/03/duplicates-detection-with-elasticsearch/comment-page-1#comment-2786 Lars Marius Garshol Sat, 02 Mar 2013 09:19:08 +0000 http://zmievski.org/?p=1122#comment-2786 It's interesting to see what you chose to approach this problem by simply querying the search engine directly. I'm surprised your results seem so good, because generally this is a tricky problem, where information from many fields (name, address, phone number, geoposition) etc all need to be considered and weighed against one another. I had the same problem and chose to build <a href="http://code.google.com/p/duke/" rel="nofollow">a full record linkage engine</a> on top of Lucene. That basically uses Lucene to find candidate matches (much like you do), but then does configurable detailed comparison with weighted Levenshtein, q-grams etc etc and combines results for different properties using Bayes's Theorem. It also cleans and normalizes data before comparison. Even that requires a lot of tuning and work to produce good results, so, like I said, I'm surprised your results look so good. But maybe I'm missing something. It’s interesting to see what you chose to approach this problem by simply querying the search engine directly. I’m surprised your results seem so good, because generally this is a tricky problem, where information from many fields (name, address, phone number, geoposition) etc all need to be considered and weighed against one another.

I had the same problem and chose to build a full record linkage engine on top of Lucene. That basically uses Lucene to find candidate matches (much like you do), but then does configurable detailed comparison with weighted Levenshtein, q-grams etc etc and combines results for different properties using Bayes’s Theorem. It also cleans and normalizes data before comparison.

Even that requires a lot of tuning and work to produce good results, so, like I said, I’m surprised your results look so good. But maybe I’m missing something.

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