Search Precision and Recall By Example
The following is an excerpt from our upcoming book Relevant Search from a chapter written by OSC alum John Berryman. Use discount code turnbullmu to get 38% off! Precision…
Quick Start with Neo4J using YOUR Twitter Data
When learning a new technology its best to have a toy problem in mind so that youre not just reimplementing another glorified “Hello World” project. Also, if you need…
Parameterizing and Organizing Solr Boosts
One of my clients has some pretty heavy-duty requirements for boosting functions. Its actually right on the boundary of what I think is appropriate for Solr. BUT, while I…
Using Cassandra to Build a Naive Bayes Classifier of Users Based Upon Behavior
In our last post, we found out how simple it is to use Cassandra to estimate ad conversion. Its easy, because effectively all you have to do is accumulate…
Estimating Ad Conversion Rates using Cassandra
Dont let anybody fool you; a good bit of what a data scientist does is a glorified form of counting. And if you had a few billion fingers, you…
Why is Multi-term synonym mapping so hard in Solr?
There is a very common need for multi-term synonyms. Weve actually run across several use cases among our recent clients. Consider the following examples: Ecommerce: If a customer searches…
Detecting Reddit Voting Rings Using This Weird Little Data Trick
A wolf in sheeps clothing Wow, so apparently the Reddit community has outed (and as of 15 minutes ago, ousted) colleague Doug Turnbull as the vile spammer that he…
OSC has 9 speaking engagements the Fall (and counting)
Just in case youre interested, Id like to add 6ish more speaking engagements to the list of speakers were taking to Dublin this November. Database History from Codd to…
Search-Aware Product Recommendation in Solr
Building upon earlier work with semantic search, OpenSource Connections is excited to unveil exciting new possibilities with Solr-based product recommendation. With this technology, it is now possible to serve…
Easy k-NN Document Classification with Solr and Python
Youve got a problem: You have 1 buzzillion documents that must all be classified. Naturally, tagging them by hand is completely infeasible. However you are fortunate enough to have…
Classifying Non-Patent Literature to Aid in Prior Art Searches
Before a patent can be granted, it must be proven beyond a reasonable doubt that the innovation outlined by the patent application is indeed novel. Similarly, when defending ones…
Building the Perfect Cassandra Test Environment
A month back, one of our clients asked us to set up 15 individual single-node Cassandra instances, each of which would live in 64MB of RAM and each of…