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Note: see Glossary at the bottom for definitions of technical terms and acronyms.

I. Problem/Value Statement

Problem Statement:

Harvard Yenching Library has performed optical character recognition (OCR) on a large corpus of ancient Chinese texts in its collection, and now would like deposit that text to the Digital Repository Service (DRS), associate it with existing Page Delivery Service (PDS) objects and have the OCR be searchable.  Additionally, a large collection of modern Chinese Documents on Contemporary Chinese Politics has been purchased and digitized by the Harvard-Yenching Institute. The collection, including CJK OCR has been loaded to the DRS but is not currently searchable in Full Text Search (FTS) because FTS doesn't support CJK search. The CJK OCR should be searchable in FTS and deliverable in PDS.

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Updating FTS to enable CJK search will make it possible for researchers to ask exploratory questions of the data and get quick on-the-fly responses.  Full-text search means that these questions can be answered immediately, and so will be practical to investigate in many cases in which examining every page of a scanned text by hand to find out the answer would not be an option worth contemplating. Updating DRS to allow adding OCR to existing PDS objects will allow the OCR for ancient Chinese texts and OCR for many similar projects to enrich existing PDS documents in DRS with OCR as OCR technology for non-Latin languages matures and gets better.

II.Vision and Approach

Describe the solution:
The solution will consist of an upgraded FTS search index using Solr which will be additionally tuned to support the CJK requirements. The upgraded index will use the DRS indexing functions to support the updating and full text indexing of documents in the FTS search index. As part of this solution existing documents will need to be reindexed to support updated features within the Solr environment.The updated FTS search servlet will submit a search and return the results of a search submitted through PDS/Mirador or through an FTS form, in keeping with the current FTS functionality. The PDS Mirador will display the resulting search and the relevant PDS document pages, in keeping with the current FTS functionality. The API used for these functions will be kept as consistent as possible.

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Out of Scope (for medium and large projects):
Support for indexing and search in FTS for other languages; support for bulk-adding any other metadata or content to the DRS; any UI changes or enhancements to current FTS or PDS/Mirador

III. Stakeholders/People

Who is the work being done for? (Sponsor)

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IV. Schedule and Cost

Schedule: [include project phases, known reporting dates, and delivery deadlines]

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