Parth Vasa, Head of Data Science at Bloomberg Engineering, explains why Bloomberg integrated machine learning search reranking directly into Apache Solr.
“And also, it reduces the hop between two services, so your performance gets much better.”
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More from Parth Vasa
Disclosure
Bloomberg chose Apache Solr over Elasticsearch to maintain open-source control
“One was, we were looking for something that was truly open source, where we had a lot more control over open source and, sorry, source code, and a lot more saying how the direction goes.”
Parth VasaMay 24, 2017▶ 13:16How to Train Your Search Engine // Parth Vasa, Bloomberg (FirstMark's Data Driven)
AssertionNot checkable as stated
Bloomberg cannot rely on large-scale A/B testing or usage data
“So a lot of the luxury that other companies have, like doing large scale machine learning based on massive amount of usage data, or doing large scale A-B testing to decide which model works better, doesn't work for us.”
Parth VasaMay 24, 2017▶ 2:12How to Train Your Search Engine // Parth Vasa, Bloomberg (FirstMark's Data Driven)
Disclosure
Learning-to-rank algorithms continuously improve search models without manual human tweaking
“We had a huge improvement once we started using it, but more than that improvement, the good part about learning to rank is it always continues to improve your model without constant need of people tweaking it.”
Parth VasaMay 24, 2017▶ 9:59How to Train Your Search Engine // Parth Vasa, Bloomberg (FirstMark's Data Driven)
Disclosure
Bloomberg limits unsupervised learning to data bootstrapping due to precision needs
“We use unsupervised learning a lot to Sort of bootstrap our data. For example, word to whack, right? It's a perfect unsupervised learning algorithm. We use that a lot to, for query reformulation and all that, but, ah, it's a little risky for something as high …”
Parth VasaMay 24, 2017▶ 22:10How to Train Your Search Engine // Parth Vasa, Bloomberg (FirstMark's Data Driven)
Disclosure
Bloomberg plans to consolidate terminal search into a single ranked list
“And we want to get to a place where you can search all that in one screen, and we will give you that information in one single ranked list, so you don't have to learn more and more different places to search for data.”
Parth VasaMay 24, 2017▶ 3:53How to Train Your Search Engine // Parth Vasa, Bloomberg (FirstMark's Data Driven)
AssertionSupported
Bloomberg contributed code to the last fifteen Apache Solr releases
“I think about the last 15, 15 or 16 versions of Solr have had some sort of our code in it”
Parth VasaMay 24, 2017▶ 4:55How to Train Your Search Engine // Parth Vasa, Bloomberg (FirstMark's Data Driven)
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