ivan provalov

search solr lucene morphology instant search autocomplete scoring queries character mapping precision langauge test recall tokenization relevancy solr search netflix testing uima opennlp big data ml aws nlp lucidworks search mahout lucidworks zookeeper hive hbase hadoop oozie gate zabbix machine learning scaling query expansion memory consumption performance tuning performance hot spots meetup tools relevance multi-million document collection michigan gc tuning filter performance group cengage learning john nader information retrieval