Lazada - Full Text Search

Alex Sharov

What we want?

• Conversion rate
• Avg basket cost
• Don't loose new products
• ...
• Don't forget about customer query

Speed increase all metrics

Current avg speed: 30 milliseconds

Mis-spelling

                sony  310
                shiny 4
        siny -> miny  309 -> sony
                sin   3
                sink  6
    

Mis-spelling

Works very good for single word

Mis-spelling

           siny camera -> ... 

Mis-spelling

New versions of Solr have few solutions

Machine learning

It's about using historical data

Machine learning - Metrics

• score_top_seller - sales last 45 days
• score_availability - stock quantity
• score_novelty - push up new products

Metrics - Main problem

We use it on category page But don't use on search page Actually, a bit do

Managing

Problem: it's not obviously - how to manage search results

Managing

Solution: create interface with details (why this product has that position, how Solr handle request, ...) We already have simple prototype