Open Source research tool to search, browse, analyze and explore large document collections by Semantic Search Engine and Open Source Text Mining & Text Analytics platform (Integrates ETL for document processing, OCR for images & PDF, named entity recognition for persons, organizations & locations, metadata management by thesaurus & ontologies, search user interface & search apps for fulltext search, faceted search & knowledge graph)
The application doesn't performs semantic search, only named entity recognition, OCR & indexing happens.
Like I added two boarding pass documents & tried to search "Hey I need dates" , it failed using OR,AND,!