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Joel Bernstein
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Streaming Expression's Powerful New Data Structures
In the next release of Solr, the Streaming Expression library includes two powerful new data structures called list and cell.  In this blog we'll first explore the data structures individually and then explore the exciting expressions we can build when the ...

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Having a talk with Solr using the new echo Streaming Expression
In the next release of Solr, there is a new and interesting Streaming Expression called echo . echo is a very simple expression with the following syntax: echo("Hello World") If we send this to Solr, it responds with: {
"result-set": {
"docs": [
...

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Streaming NLP is coming in Solr 6.6
Solr 6.5 is out now, so it's time to start thinking about the next release. One of the interesting features coming in Solr 6.6 is Streaming NLP . This exciting new feature is already committed and waiting for release. This blog will describe how Streaming N...

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Solr 6.5: Retrieve and rank with graph expressions
This blog describes how to retrieve and rank documents with graph expressions. First let's define exactly what it means to retrieve and rank with a graph expression and then we'll walk through an example. The retrieve step is a relevance ranked search. The ...

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Anomaly Detection in Solr 6.5
Solr 6.5 is just around the corner and along with it comes the new significantTerms Streaming Expression. The significantTerms expression queries a Solr Cloud collection but instead of returning the matching documents, it returns the significant terms in th...

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Happy 1st birthday Hannah!
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Solr's Shiny New Apache Calcite SQL Integration
Solr's new Apache Calcite SQL integration is in Lucene/Solr's master branch now. This blog will discuss Solr's potential as a distributed SQL engine, some thoughts on Apache Calcite, what's currently supported with Solr's Apache Calcite integration and what...

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Recommendations With Solr's Graph Expressions Part 1: Finding Products That Go Well Together
Graph Expressions were introduced in Solr 6.1. Graph Expressions are part of the wider Streaming Expressions library. This means that you can combine them with other expressions to build complex and interesting graph queries. Note: If you're not familiar wi...

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Deploying an AI alerting system with Solr's Streaming Expressions
As of Solr 6.4, Streaming Expressions provide all the tools you need to deploy an Artificial Intelligence alerting system. Let's take a look at some of the tools involved and then walk through a simple AI alerting use case. The Tools 1) A Text Classifier : ...
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