Crawling Crowd-Data Spots Side Effects Faster
The social crowd has proven to be powerful, if you can find some way to harness it: crowd-sourcing can perform tasks and solve collaborative problems,...
View ArticleNew Lucene 4 Functions Improve Enterprise Search Indexing
In the past, Lucene recorded only the bare minimal aggregate index statistics necessary to support its hard-wired classic vector space scoring...
View ArticleLucene has two Google Summer of Code students!
I'm happy to announce that two Lucene Google Summer of Code projects were accepted for this summer! The first project (LUCENE-3312), proposed by Nikola...
View ArticleLucene's TokenStreams are Actually Graphs!
Lucene's TokenStream class produces the sequence of tokens to be indexed for a document's fields. The API is an iterator: you call incrementToken to...
View ArticleFinite State Automata in Lucene
Lucene Revolution 2012 is now done, and the talk Robert and I gave went well! We showed how we are using automata (FSAs and FSTs) to make great...
View ArticleBuilding a New Lucene Postings Format
As of 4.0 Lucene has switched to a new pluggable codec architecture, giving the application full control over the on-disk format of all index files. We...
View ArticlePutting an Apache Lucene Index in RAM with Zing JVM
Google's entire index has been in RAM for at least 5 years now. Why not do the same with an Apache Lucene search index? RAM has become very affordable...
View ArticleLucene'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...
View ArticleFun with Lucene's Faceted Search Module
These days faceted search and navigation is common and users have come to expect and rely upon it. Lucene's facet module, first appearing in the...
View ArticleGetting Real-Time Field Values in Lucene
We know Lucene's near-real-time search is very fast: you can easily refresh your searcher once per second, even at high indexing rates, so that any change...
View ArticleDrill Sideways faceting with Lucene
Lucene's facet module, as I described previously, provides a powerful implementation of faceted search for Lucene. There's been a lot of progress...
View ArticleEating Dogfood with Lucene
Eating your own dog food is important in all walks of life: if you are a chef you should taste your own food; if you are a doctor you should treat yourself...
View ArticleA New Lucene Suggester Based on Infix Matches
Suggest, sometimes called auto-suggest, type-ahead search or auto-complete, is now an essential search feature ever since Google added it almost 5 years...
View ArticleScreaming fast Lucene searches using C++ via JNI
At the end of the day, when Lucene executes a query, after the initial setup the true hot-spot is usually rather basic code that decodes sequential...
View Article2X faster PhraseQuery with Lucene using C++ via JNI
I recently described the new lucene-c-boost github project, which provides amazing speedups (up to 7.8X faster) for common Lucene query types using specialized...
View ArticleA New Version of the Compact Language Detector
It's been almost two years since I originally factored out the fast and accurateCompact Language Detector from the Chromium project,...
View ArticleThree Exciting Lucene Features in One Day
This week has been a productive week. Suddenly, there are three exciting new features coming to Lucene. Expressions Module The first feature,...
View ArticleLucene's In-memory Terms Dictionary, Thanks to Google Summer of Code
Last year, Han Jiang's Google Summer of Code project was a big success: he created a new (now, default) postings format for substantially faster searches,...
View ArticleApache Lucene: Fast Range Faceting Using Segment Trees and the Java ASM Library
In Lucene's facet module we recently added support for dynamic range faceting, to show how many hits match each of a dynamic set of ranges. For example, the...
View ArticleUsing Lucene's Search Server to Search Jira Issues
You may remember my first blog post describing how the Lucene developers eat our own dog food by using a Lucene search application to find our...
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