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[1712.01208] The Case for Learned Index Structures
Indexes are models: a B-Tree-Index can be seen as a model to map a key to the position of a record within a sorted array, a Hash-Index as a model to map a key to a position of a record within an unsorted array, and a BitMap-Index as a model to indicate if a data record exists or not. In this exploratory research paper, we start from this premise and posit that all existing index structures can be
Latent semantic analysis - Wikipedia
Latent semantic analysis (LSA) is a technique in natural language processing, in particular distributional semantics, of analyzing relationships between a set of documents and the terms they contain by producing a set of concepts related to the documents and terms. LSA assumes that words that are close in meaning will occur in similar pieces of text (the distributional hypothesis). A matrix contai
Cloudera Blog
Enterprise IT leaders across industries are tasked with preparing their organizations for the technologies of the future – which is no simple task. With the use of AI exploding, Cloudera, in partnership with Researchscape, surveyed 600 IT leaders who work at companies with over 1,000 employees in the U.S., EMEA and APAC regions. The survey, […] Read blog post
The Joy of Indexing | Kyle Banker
September 21, 2010 We spend quite a lot of time at 10gen supporting MongoDB users. The questions we receive are truly legion but, as you might guess, they tend to overlap. We get frequent queries on sharding, replica sets, and the idiosyncrasies of JavaScript, but the one subject that never fails to appear each day on our mailing list is indexing. Now, to be clear, I’m not talking about how to cre
Apache Lucene - Index File Formats
This document defines the index file formats used in Lucene version 3.0. If you are using a different version of Lucene, please consult the copy of docs/fileformats.html that was distributed with the version you are using. Apache Lucene is written in Java, but several efforts are underway to write versions of Lucene in other programming languages. If these versions are to remain compatible with Ap
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UpdateXmlMessages - Solr - Apache Software Foundation
XML Messages for Updating a Solr Index Solr accepts POSTed XML messages that Add/Replace, Commit, Delete, and Delete by query, using the url /update (there is also a CSV interface). Here is the XML syntax that Solr expects to see: The Update Schema (Not to be confused with schema.xml.) add/replace documents Simple Example: <add> <doc> <field name="employeeId">05991</field> <field name="office">Bri
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