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Lucene's new analyzing suggester
Live suggestions as you type into a search box, sometimes called suggest or autocomplete, is now a standard, essential search feature ever since Google set a high bar after going live just over four years ago. In Lucene we have several different suggest implementations, under the suggest module; today I'm describing the new AnalyzingSuggester (to be committed soon; it should be available in 4.1).
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Quick development solutions have become a vital part of developing enterprise-grade applications in recent years. Businesses are looking for rapid application development for digital transformation. These software development approach have replaced traditional development to create apps for business process management and promote the idea of "Citizen Developers." Moreover, these development tools
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ã“ã‚“ã«ã¡ã¯ã€‚アメーãƒã§æ¤œç´¢ã‚’担当ã—ã¦ã„ã‚‹YASUDAã§ã™ã€‚ 今日ã¯ã€ã‚¢ãƒ¡ãƒ¼ãƒã§åˆ©ç”¨ã—ã¦ã„るオープンソースã®æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã§ã‚ã‚‹Lucene/Solr ã®æ–°æ©Ÿèƒ½ã®ä¸€ã¤ã‚’ã”紹介ã—ã¾ã™ã€‚ã„ã¤ã‚‚Lucene/Solrã®æ©æµã‚’å—ã‘ã¦ã„ã‚‹ã®ã§ã€å°‘ã—ã§ã‚‚æ™®åŠã«ç¹‹ãŒã‚‹ã¨å¬‰ã—ã„ã§ã™ã€‚ 紹介ã™ã‚‹ã®ã¯Lucene 3.2以é™ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§åˆ©ç”¨å¯èƒ½ã¨ãªã‚‹TieredMergePolicyã§ã™ã€‚ 以下ã«ã€Luceneã«ãŠã‘るインデックスã®Segment構æˆã€MergePolicyã®æ¦‚è¦ã€TieredMergePolicyã®ç‰¹å¾´ã¨ã‚¢ãƒ¡ãƒ¼ãƒã®å¯¾å¿œã«ã¤ã„ã¦è¨˜è¿°ã—ã¾ã™ã€‚ â– Luceneã«ãŠã‘る転置インデックスã®Segmentæ§‹æˆ Luceneã®è»¢ç½®ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã¯ã€å„々ãŒç‹¬ç«‹ã—ãŸSegmentã¨ã„ã†å˜ä½ã§æ§‹æˆã•ã‚Œã¦ãŠã‚Šã€ãƒ‰ã‚ュメントã®è¿½åŠ 分をflushã™ã‚‹éš›ã€æ–°ã—ã„世代番å·ã‚’付ã‘ãŸSegmentを生æˆã—ã¦ã„ãã¾ã™ï¼ˆå›³1）。
Lucene nightly benchmarks
Each night, an automated Python tool checks out the Lucene/Solr trunk source code and runs multiple benchmarks: indexing the entire Wikipedia English export three times (with different settings / document sizes); running a near-real-time latency test; running a set of "hardish" auto-generated queries and tasks. The tests take around 2.5 hours to run, and the results are verified against the previo
[HBASE-3529] Add search to HBase - ASF JIRA
Using the Apache Lucene library we can add freetext search to HBase. The advantages of this are: HBase is highly scalable and distributed HBase is realtime Lucene is a fast inverted index and will soon be realtime (see LUCENE-2312) Lucene offers many types of queries not currently available in HBase (eg, AND, OR, NOT, phrase, etc) It's easier to build scalable realtime systems on top of already ar
Lucene's FuzzyQuery is 100 times faster in 4.0
There are many exciting improvements in Lucene's eventual 4.0 (trunk) release, but the awesome speedup to FuzzyQuery really stands out, not only from its incredible gains but also because of the amazing behind-the-scenes story of how it all came to be. FuzzyQuery matches terms "close" to a specified base term: you specify an allowed maximum edit distance, and any terms within that edit distance fr
Visualizing Lucene's segment merges
If you've ever wondered how Lucene picks segments to merge during indexing, it looks something like this: That video displays segment merges while indexing the entire Wikipedia (English) export (29 GB plain text), played back at ~8X real-time. Each segment is a bar, whose height is the size (in MB) of the segment (log-scale). Segments on the left are largest; as new segments are flushed, they appe
What's powering the Content API? - The Guardian speaks at Lucene Eurocon 2010
The Commercial launch of our Open Platform is a big step for us; for the Guardian's tech team in particular, it means a step change in the the technology that powers it. (If you haven't already watched Mat Wall's video explaining how the platform works, I strongly recommend it for a quick recap.) When we started to work on the new release of the Content API, our team realised that it needed robust
第４回Solr勉強会 - sub usuilog;
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What Is the SpanQuery?
[LUCENE-3454] rename optimize to a less cool-sounding name - ASF JIRA
Gimme all resources you have – I can use them! – Trifork Blog
Google Code Archive - Long-term storage for Google Code Project Hosting.
[LUCENE-2507] automaton spellchecker - ASF JIRA
[LUCENE-2816] MMapDirectory speedups - ASF JIRA
[LUCENE-2846] omitTF is viral, but omitNorms is anti-viral. - ASF JIRA
[LUCENE-2620] Queries with too many asterisks causing 100% CPU usage - ASF JIRA
Lucene Revolution 2010 Presentations | Lucid Imagination
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