Version 7 represents major progress in terms of future-proofing Head Start. It contains the result of a refactoring of the Head Start frontend in React and the introduction of a state-store based on Redux. The backend (data clients and machine learning pipeline) has been refactored into a microservice-architecture based on Docker containers, a Redis-queue and a Postgres database.
In this release, knowledge map quality has been significantly improved by adding a default minimum-length for abstracts in BASE, improving the query sanitization and search behavior of data clients, as well as a range of metadata schema alignments, improved backward compatibility of the frontend, and various smaller bug fixes.
The release also contains a new data client for Google Spreadsheets, which is the basis for CoVis. For more information on CoVis, please visit our projects page.
Head Start has also been adapted to integrate with the new search-flow module resulting in a better search experience.
Major changes include:
- Refactoring of all visualization components in React #458, #456, #462, #481, #499, #501, #505, #509, #512, #513, #518, #525, #532, #535, #551, #551, #569, #570
- Containerization of R-based backend with Docker #427, #433, #503, #516, #517, #515, #517, #552, #590
- Addition of Google-Spreadsheets data client #428, #432, #461
- Integration with new search-flow module #539, #576
- Introduction of expressive error messages and search hints
Minor changes include:
- Introduction of test framework for Head Start client #444, #454
- Introduction of regression tests in backend #466
- Boolean queries for BASE #412
- Abstract length filter for BASE #464
- Data client retries on timeout #489
- AJAX based fallback behavior for search request timeouts #419
- Activation of browser back/forward buttons for zoom in/out #605
- Critical security and other maintenance updates
Bug Fixes:
- Re-enabled article types in PubMed #420, #479
- OpenAIRE data client bug fixes #450, #591
- Metadata schema bug fixes #440, #446, #494, #498, #514, #571, #579
- Streamgraph bug fixes #402
- Clustering bug fix #448
- Summarization stopwords bug fix #477
- Highlighting bug fix #496
- Visualization metadata backwards compatibility #530
- Document type updates for BASE #559
- Search query format bug fix #529
- Many other small bug fixes