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luceneã«é–¢ã™ã‚‹yassã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (35)

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Luceneã®ãƒ¡ãƒ¢ãƒªä¸Šã§ã®ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹æ§‹é€ ã¨ãã®ä»•çµ„ã¿ - ã‚¨ãƒ ã‚¹ãƒªãƒ¼ãƒ†ãƒƒã‚¯ãƒ–ãƒã‚°
ã‚¨ãƒ ã‚¹ãƒªãƒ¼ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãƒªãƒ³ã‚°ã‚°ãƒ«ãƒ¼ãƒ— AIãƒ»æ©Ÿæ¢°å¦ç¿’ãƒãƒ¼ãƒ ã§ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã‚’ã—ã¦ã„ã‚‹ä¸æ‘(@po3rin) ã§ã™ã€‚ å¼Šç¤¾ã§ã¯æ¯Žé€±æ°´æ›œæ—¥ã«Elasticsearchã¨Luceneã®ã‚³ãƒ¼ãƒ‰ãƒªãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ä¼šãŒé–‹å‚¬ã•ã‚Œã¦ã„ã¾ã™ã€‚æœ€è¿‘ã§ã¯Luceneã®FSTã‚„KD-Treeã€ã‚‚ã†ã™ãå…¬é–‹ã•ã‚Œã‚‹NSWã®å®Ÿè£…å‘¨ã‚Šã‚’èªã‚“ã§ã„ã¾ã—ãŸã€‚ å…ˆæ—¥ã€ç§ã®ç™ºè¡¨å›žã§Luceneã®ãƒ¡ãƒ¢ãƒªä¸Šã§ã®è»¢ç½®ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã®ãƒ‡ãƒ¼ã‚¿æ§‹é€ ã«ã¤ã„ã¦ç™ºè¡¨ã—ãŸã®ã§ã€ãã®å†…å®¹ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚Luceneã®ã“ã¨ãŒå°‘ã—ã§ã‚‚èº«è¿‘ã«æ„Ÿã˜ã¦ã„ãŸã ã‘ã‚Œã°å¹¸ã„ã§ã™ã€‚ Luceneã¨ã¯ è»¢ç½®ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã«é–¢ã™ã‚‹äº‹å‰çŸ¥è˜ Luceneã®äº‹å‰çŸ¥è˜ Luceneã®ãƒ¡ãƒ¢ãƒªä¸Šã§ã®è»¢ç½®ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹å®Ÿè£…å†…éƒ¨ ç¢ºä¿ã—ãŸãƒ¡ãƒ¢ãƒªãŒã‚ãµã‚ŒãŸå ´åˆ ã¾ã¨ã‚ We're hiring !!! Luceneã¨ã¯ github.com Elasticsearchã®å†…éƒ¨ã§åˆ©ç”¨ã•ã‚Œã¦ã„ã‚‹ã‚ªãƒ¼ãƒ—ãƒ³
yass 2021/08/03
lucene

full text search

index

book
ãƒªãƒ³ã‚¯
GitHub - quickwit-oss/tantivy: Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust
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yass 2018/09/17
full text search

lucene

rust
ãƒªãƒ³ã‚¯
Chronix: Long term storage and retrieval technology for anomaly detection in operational data | the morning paper
yass 2017/03/11
time series database

lucene
ãƒªãƒ³ã‚¯
Frame of Reference and Roaring Bitmaps
Postings listsWhile it may surprise you if you are new to search engine internals, one of the most important building blocks of a search engine is the ability to efficiently compress and quickly decode sorted lists of integers. Why is this useful? As you may know, Elasticsearch shards, which are Lucene indices under the hood, split the data that they store into segments which are regularly merged
yass 2016/06/11
integer

compression

delta encoding

bit packing

lucene

BitSet

bitmap index

roaringbitmap
ãƒªãƒ³ã‚¯
Lucene lecture at Pisa
Package: org.apache.lucene.analysis An Analyzer is a TokenStream factory. A TokenStream is an iterator over Tokens. input is a character iterator (Reader) A Token is tuple <text, type, start, length, positionIncrement> text (e.g., â€œpisaâ€). type (e.g., â€œwordâ€, â€œsentâ€, â€œparaâ€). start & length offsets, in characters (e.g, <5,4>) positionIncrement (normally 1) standard TokenStream implementations are
yass 2015/03/22
lucene

algorithm

skip list

index
ãƒªãƒ³ã‚¯
Text processing (part 2): Inverted Index
This is the second part of my text processing series.Â In this blog, we'll look into how text documents can be stored in a form that can be easily retrieved by a query.Â I'll used the popular open source Apache Lucene index for illustration. There are two main processing flow in the system ... Document indexing: Given a document, add it into the index Document retrieval: Given a query, retrieve th
yass 2015/03/22
lucene

index
ãƒªãƒ³ã‚¯
Hacking Lucene - The Index format - Hacker Labs
yass 2015/03/22
lucene

index
ãƒªãƒ³ã‚¯
moco(beta)'s backup: [ç¿»è¨³] Using Finite State Transducers in Lucene
Lucene/Solr Advent Calendar 2014 22æ—¥ã‚ã§ã™ã€‚ ç¬¬15å›žSolrå‹‰å¼·ä¼šã§ã€ã”ãè»½ãLucene FST ã®ç´¹ä»‹ã‚’ã—ãŸã®ã§ã™ãŒã€è‡ªåˆ†ã‚‚ã¾ã ã¾ã å‹‰å¼·ä¸ã§ã™ã€‚ã¨ã„ã†ã“ã¨ã§ Lucene é–‹ç™ºè€…ã® Mike ã•ã‚“ã«ã€ã ã‚ã‚‚ã¨ã§ã€Œãƒ–ãƒã‚°ã®FST é–¢é€£ã®ã‚¨ãƒ³ãƒˆãƒªã‚’ç¿»è¨³ã—ã¦ã„ã„ã§ã™ã‹ï¼Ÿã€ã¨ãƒ¡ãƒ¼ãƒ«ã‚’é€ã£ã¦ã¿ãŸã¨ã“ã‚ã€ã€Œã„ã„ã‚ˆï¼ã€ã¨å¿«è«¾ã—ã¦ã‚‚ã‚‰ãˆãŸã®ã§ã€ã“ã“ã«æŽ²è¼‰ã—ã¾ã™ã€‚ â€”- é–¢é€£ã™ã‚‹è©±é¡Œã§ã™ãŒã€ Golang ã§æ›¸ã‹ã‚ŒãŸå½¢æ…‹ç´ è§£æžå™¨ kagome ã‚’ä½œã£ã¦ã„ã‚‹ @ikawaha ã•ã‚“ãŒã€Lucene ã‚’çµ¡ã‚ã¦çŒ«ã«ã‚‚ã‚ã‹ã‚‹ï¼ˆã‹ã‚‚ã—ã‚Œãªã„ï¼‰ FST ã®è§£èª¬ã‚’æ›¸ã„ã¦ãã ã•ã„ã¾ã—ãŸã€‚ã‚ã‚ŠãŒã¨ã†ã‚ã‚ŠãŒã¨ã†ï¼ˆï¼›Ï‰ï¼›ï¼‰ï¼ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®èª¬æ˜Žã‹ã‚‰ Double Array ã¨ã®æ¯”è¼ƒã¾ã§è‡³ã‚Œã‚Šå°½ãã›ã‚Šãªã®ã§ã‚ã‚ã›ã¦ã©ã†ãžã€‚ Luceneã§ä½¿ã‚ã‚Œã¦ã‚‹FSTã‚’å®Ÿè£…ã—ã¦ã¿ãŸï¼ˆæ£è¦è¡¨ç¾ãƒžãƒƒãƒï¼šVM
yass 2015/03/21
" SortedMap å®Ÿè£…ã‚ˆã‚Šã‚‚ãƒ¡ãƒ¢ãƒªæ¶ˆè²»ãŒå°‘ãªãã€ã—ã‹ã—ãƒ«ãƒƒã‚¯ã‚¢ãƒƒãƒ—æ™‚ã® CPU ã‚³ã‚¹ãƒˆãŒé«˜ãã¤ã"

lucene

fst

data structure

hashtable
ãƒªãƒ³ã‚¯
Lucene: The Good Parts | Parse.ly
Content Analytics Dashboard Build a better, smarter content strategy Content Conversion Engine Prove your content's value Content API for Developers Personalize your content experiences Data Pipeline for Analysts Stream your real-time content data Content Management System Publish better content, faster Before Mongo DB, before Cassandra, before â€œNoSQLâ€, there was Lucene. Did you know that Doug Cutt
yass 2015/03/14
"Notice that 50x75 is a special term that encompasses a bracket of 25 discrete values, and thus points to a lot of documents. This allows for smaller queries to cover ranges, and a quicker retrieval of documents over large ranges."

lucene

bitset
ãƒªãƒ³ã‚¯
Real-time Analytics Database | CrateDB
Execute ad-hoc queries on billions of records in milliseconds. Columnar storage guarantees ultra-fast aggregations, enabling instant data-driven decisions. Begin with a simple query and delve into complex data relationships, revealing trends and patterns across diverse data types. Hybrid Search Effortless search across structured, semi-structured, geospatial, and vector data. Perform full-text, ve
yass 2014/04/19
" Crate Data is a distributed system that runs on one machine or a cluster of machines. Crate comes in one complete install package. It includes solid established open source components (Presto, Elasticsearch, Lucene, Netty) "

sql

presto

netty

lucene

elasticsearch

distributed
ãƒªãƒ³ã‚¯
æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³Luceneã®æ´å²ã¨ã“ã‚Œã‹ã‚‰ - ãƒ¯ã‚¶ãƒŽãƒ | wazanova
http://www.youtube.com/watch?v=5444z-L2V2A 1 comment | 0 points | by WazanovaNews â– comment by Jshiike | ç´„3æ™‚é–“å‰ Luceneã®ã‚ªãƒªã‚¸ãƒŠãƒ«ã®é–‹ç™ºè€…ã§ã‚ã‚‹Doug Cuttingï¼ˆClouderaã®Chief Architectã¨ Apache Software Foundationã®Directorã‚’å…¼å‹™ï¼‰ãŒã€Luceneã®æ´å²ã¨ä»Šå¾Œã®å±•é–‹ã‚’ç´¹ä»‹ã—ã¦ã„ã¾ã™ã€‚ æ¤œç´¢ã‚µã‚¤ãƒˆExciteã«å‹¤å‹™ã—ã¦ã„ãŸ1997å¹´ã«é–‹ç™ºé–‹å§‹ã€‚å½“æ™‚æ–°ã—ãã§ã¦ããŸJavaã‚’ä½¿ã£ã¦ã¿ãŸã‹ã£ãŸ & ãƒãƒƒãƒˆãƒãƒ–ãƒ«ãŒå¼¾ã‘ã‚‹ã®ãŒä¸å®‰ã§ä½•ã‹ã‹ãŸã¡ã«æ®‹ã‚‹ã‚‚ã®ã‚’ã¤ãã£ã¦ãŠããŸã‹ã£ãŸã€‚2000å¹´ã«ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã¨ã—ã¦æä¾›ã€‚Solrã¯2006å¹´ã€Solr CloudãŒ2012å¹´ã€‚æ˜¨å¹´ã«ã¯Hadoopãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã®æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã«
yass 2014/02/28
" Elasticsearchã¯ã€Solrã®ã‚ˆã†ãªä»¥å‰ã‹ã‚‰ã‚ã‚‹ã‚‚ã®ã§ãªãã€æ–°ã—ãä¸€ã‹ã‚‰ã¤ãã£ãŸã®ã§ã€APIãŒã‚‚ã£ã¨ã‚·ãƒ³ãƒ—ãƒ«ã§ã‚¯ãƒªãƒ¼ãƒ³ã€‚ä»–ã¨ã®ã‚¤ãƒ³ãƒ†ã‚°ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã€æ©Ÿèƒ½ã¨ã„ã†é¢ã§ã¯Solr Cloudã€‚ã¨ã¯ã„ãˆã€æŠ€è¡“çš„ã«ã¯5åˆ†5åˆ†ã‹ãªã€‚"

lucene

solr

elasticsearch
ãƒªãƒ³ã‚¯
https://archive.apachecon.com/eu2012/presentations/06-Tuesday/PR-Lucene/aceu-2012-lucene-4-performance-tuning.pdf
yass 2013/11/29
lucene

indxe

full text search

Performance
ãƒªãƒ³ã‚¯
http://blog.griddynamics.com/2011/04/indexes-rdbms-vs-coherence-vs-lucene.html
yass 2013/11/17
Lucene

coherence

database

index

toread
ãƒªãƒ³ã‚¯
What is in a Lucene index
Presented at Lucene Revolution 2013 in Dublin.
yass 2013/11/15
lucene

index
ãƒªãƒ³ã‚¯
MOPID | Accelerate Your Hiring Process - Hire the Best, 10x Faster
yass 2013/08/13
" The basic idea of PForDelta is as follows: in order to compress a block of k numbers, say, 256 numbers, it first determines a value b such that most of the 256 values to be encoded (say, 90%) are less than 2^b and thus fit into a fixed bit field of b bit s each. "

integer

compression

PForDelta

lucene
ãƒªãƒ³ã‚¯
OSSã®é¡žä¼¼ç”»åƒæ¤œç´¢ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆ Apache alike ã®ã”ç´¹ä»‹ - æ ªå¼ä¼šç¤¾ãƒãƒ³ã‚¦ã‚¤ãƒƒãƒˆ
alike ã§ã®é¡žä¼¼ç”»åƒæ¤œç´¢ã®ä¸»è¦ãªéƒ¨åˆ†ã¯ä¸Šè¨˜ã®æ—¢å˜OSSã‚’åˆ©ç”¨ã—ã¦ã„ã‚‹ãŸã‚ã€alike è‡ªèº«ã¯éžå¸¸ã«ã‚³ãƒ³ãƒ‘ã‚¯ãƒˆãªæ§‹é€ ã«ãªã£ã¦ã„ã¾ã™ã€‚ä¸‹å›³ã«alikeã®ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã‚’ç¤ºã—ã¾ã™ã€‚ Apache alikeã®ãƒ‡ãƒ¢ ä¸‹è¨˜ã®ãƒªãƒ³ã‚¯ã‚’ã‚¯ãƒªãƒƒã‚¯ã™ã‚‹ã¨ã€é¡žä¼¼ç”»åƒæ¤œç´¢ã‚’ä½“é¨“ã§ãã¾ã™ã€‚ãƒªãƒ³ã‚¯ã‚’ã‚¯ãƒªãƒƒã‚¯ã—ã¦è¡¨ç¤ºã•ã‚ŒãŸç”»é¢ã®ä¸€ç•ªä¸Šã®ç”»åƒãŒã€Œæ¤œç´¢å…ƒã€ã®ç”»åƒã§ã€2ç•ªç›®ä»¥é™ã®ç”»åƒãŒæ¤œç´¢å…ƒã¨ä¼¼ã¦ã„ã‚‹ã¨åˆ¤æ–ã•ã‚ŒãŸé¡žä¼¼ç”»åƒä¸€è¦§ã§ã™ã€‚Luceneã«ã‚ˆã‚Šã€Œä¼¼ã¦ã„ã‚‹é †ã€ã«è¡¨ç¤ºã•ã‚Œã¦ã„ã¾ã™ã€‚ http://rondhuit-demo.com/p/alike/ukbench/full/ukbench01700.jpg http://rondhuit-demo.com/p/alike/ukbench/full/ukbench01990.jpg http://rondhuit-demo.com/p/alike/ukbench/full
yass 2013/07/29
apache

OpenCV

lucene

image
ãƒªãƒ³ã‚¯
64ãƒ“ãƒƒãƒˆãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã§çµ¶å¯¾ãŠå‹§ã‚ã®Luceneã®MMapDirectory ï¼ˆUweæ°ã®ãƒ–ãƒã‚°ã‚ˆã‚Šï¼‰ | é–¢å£å®å¸ã®Luceneãƒ–ãƒã‚°
ä¸€å®šæœŸé–“æ›´æ–°ãŒãªã„ãŸã‚åºƒå‘Šã‚’è¡¨ç¤ºã—ã¦ã„ã¾ã™
yass 2013/05/03
lucene

java

mmap

memory
ãƒªãƒ³ã‚¯
ã‚»ãƒ¼ãƒ«ã‚¹ãƒ•ã‚©ãƒ¼ã‚¹ã®ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ï¼ˆç‰©ç†ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ç·¨ï¼‰ï½ž Podã«ã‚ˆã‚‹ã‚¹ã‚±ãƒ¼ãƒ«ã‚¢ã‚¦ãƒˆ
ç±³å›½ã®è¨ˆç®—æ©Ÿå¦ä¼šã¨ã—ã¦çŸ¥ã‚‰ã‚Œã‚‹ACMãŒä¸»å‚¬ã—ãŸã‚¯ãƒ©ã‚¦ãƒ‰ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã®ã‚·ãƒ³ãƒã‚¸ã‚¦ãƒ ã€ŒACM Symposium on Cloud Computing 2010ã€ï¼ˆACM SOCC 2010ï¼‰ãŒ6æœˆ10æ—¥ã€11æ—¥ã«ã‚¤ãƒ³ãƒ‡ã‚£ã‚¢ãƒŠå·žã‚¤ãƒ³ãƒ‡ã‚£ã‚¢ãƒŠãƒãƒªã‚¹ã§é–‹å‚¬ã•ã‚Œã¾ã—ãŸã€‚ åŸºèª¿è¬›æ¼”ã«ã¯ã€ã‚°ãƒ¼ã‚°ãƒ«ã€Facebookã€ã‚»ãƒ¼ãƒ«ã‚¹ãƒ•ã‚©ãƒ¼ã‚¹ãƒ»ãƒ‰ãƒƒãƒˆã‚³ãƒ ã¨ã„ã†ã‚¯ãƒ©ã‚¦ãƒ‰æ¥ç•Œã®ãƒˆãƒƒãƒ—ãƒ™ãƒ³ãƒ€ãƒ¼ãŒç™»å ´ã—ã€ãã‚Œãžã‚Œã®ã‚¯ãƒ©ã‚¦ãƒ‰ã«ã¤ã„ã¦èªžã‚‹ã¨ã„ã†å†…å®¹ã§ã—ãŸã€‚ã“ã“ã§ã¯ãã®åŸºèª¿è¬›æ¼”ã‹ã‚‰ã€ã‚»ãƒ¼ãƒ«ã‚¹ãƒ•ã‚©ãƒ¼ã‚¹ãƒ»ãƒ‰ãƒƒãƒˆã‚³ãƒ ã®Rob Woollenæ°ã«ã‚ˆã‚‹åŒç¤¾ã‚¯ãƒ©ã‚¦ãƒ‰ã®ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã®è§£èª¬ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ãŠãã‚‰ãã“ã‚Œã¾ã§ã§ã‚‚ã£ã¨ã‚‚è©³ã—ãã€åŒç¤¾ã®ã‚¯ãƒ©ã‚¦ãƒ‰ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã‚’è§£èª¬ã—ãŸã‚‚ã®ã«ãªã£ã¦ã„ã¾ã™ã€‚ ã‚»ãƒ¼ãƒ«ã‚¹ãƒ•ã‚©ãƒ¼ã‚¹ã®ãƒžãƒ«ãƒãƒ†ãƒŠãƒ³ãƒˆã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã¨ã¯ Rob Woollenæ°ã€‚è¬›æ¼”ã‚¿ã‚¤ãƒˆãƒ«ã¯ã€ŒInside Cloud:Salesforce.
yass 2013/04/23
resin

lucene

Salesforce.com

cloud

architecture
ãƒªãƒ³ã‚¯
Lucece Indexing
2. What is a Search Index Search Index is a variant of Database Similarities with traditional RDBMS Needs to have fast lookup for keys Bulk of data resides on secondary storage Minimize secondary storage access Differences(additions) compared to RDBMS No definitive score, returns only top k ranked hits Relaxed transactional requirements Two-level processing required ( details later..) 3. Requireme
yass 2012/11/19
lucene

index

inverted index

full text search
ãƒªãƒ³ã‚¯
Fast Intersection of Sorted Lists Using SSE Instructions
Intersection of sorted lists is a cornerstone operation in many applications including search engines and databases because indexes are oftenÂ implementedÂ using different types of sorted structures.Â At GridDynamics, we recently worked on a custom database for realtime web analytics where fast intersection of very large lists of IDs was a must for good performance. From a functional point of view, w
yass 2012/11/18
intersection

algorithm

hardware

integer

sort

java

lucene

sse

simd
ãƒªãƒ³ã‚¯
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