「中の人」が語る！Apache Lucene/SolrとOpenNLPで作る全文検索エンジン (An insider's talk: building a full-text search engine with Apache Lucene/Solr and OpenNLP)

15:15 session at Open Source Conference 2018 Enterprise, billed to '関口 宏司（株式会社ロンウイット 代表取締役社長）'. He speaks about the Apache Software Foundation, which he joined as a Member that year, and about Lucene/Solr and OpenNLP as a committer and PMC member.