Initial versions of the library include a query filter when your entites specify a document key or key field in their mappings. The intention of this filter is to ensure that multiple entity types can ...

Apache Lucene is a high-performance, full-featured text search engine library written in Java. We'll assume that you know how to get and set up the JDK - if you don't ...

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...