Tamu big data-conf-1b
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Big Data in the Humanities via eMOP and OCRing two proprietary document collections
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Tamu big data-conf-1b
- 1. The Early Modern OCR Project Big Data in the Humanities Matthew Christy, Laura Mandell, Elizabeth Grumbach
- 2. emop.tamu.edu/ Texas A&M Big Data Workshop emop.tamu.edu/TAMU- BigData eMOP Workflows emop.tamu.edu/workflows Mellon Grant Proposal idhmc.tamu.edu/projects/ Mellon/eMOPPublic.pdf eMOP Info eMOP Website More eMOP Facebook The Early Modern OCR Project Twitter #emop @IDHMC_Nexus @mandellc @matt_christy @EMGrumbach 2
- 3. The Numbers Page Images Early English Books online (Proquest) EEBO: ~125,000 documents, ~13 million pages images (1475-1700) Eighteenth Century Collections Online (Gale Cengage) ECCO: ~182,000 documents, ~32 million page images (1700-1800) Total: >300,000 documents & 45 million page images. Ground Truth Text Creation Partnership TCP: ~46,000 double-keyed hand transcribed docuemnts 44,000 EEBO 2,200 ECCO 3
- 5. 5 • PRImA (Pattern Recognition & Image Analysis Research) Lab at the University of Salford, Manchester, UK • SEASR (Software Environment for the Advancement of Scholarly Research) at the University of Illinois, Urbana-Champaign • PSI (Perception, Sensing, and Instrumentation) Lab at Texas A&M University • The Academy for Advanced Telecommunications and Learning Technologies at Texas A&M University • The Brazos High Performance Computing Cluster (HPCC) OurPartners
- 6. The Problems Early Modern Printing Individual, hand-made typefaces Worn and broken type Poor quality equipment/paper Inconsistent line bases Unusual page layouts, decorative page elements, Special characters & ligatures Spelling variations Mixed typefaces and languages over/under-inking Old, low-quality, small tiff files Noise, skew, warp, bleedthrough, 6
- 7. Page Images DH2014 - Diagnosing Page Image Problems with Post-OCR Triage for eMOP 7
- 8. 8 Workflows-Controller • Powered by the eMOP DB • Collection processing is managed via the online Dashboard emop-dashboard.tamu.edu • Run by emop-controller.py
- 10. Brazos HPCC • 128 processors as a stakeholder • Access to background queues • Estimated at over 2 months of constant processing • We will have to reprocess some files that fail due to timeouts or that require pre-processing 10
Notes de l'éditeur
- The Early Modern OCR Project (eMOP) is an Andrew W. Mellon Foundation funded grant project running out of the Initiative for Digital Humanities, Media, and Culture (IDHMC) at Texas A&M University, to develop and test tools and techniques to improve Optical Character Recognition (OCR) outcomes for printed English documents from the hand press period, roughly 1475-1800. The basic premise of eMOP is to use typeface and book history techniques to train modern OCR engines specifically on the typefaces in our collection of documents, and thereby improve the accuracy of the OCR results. eMOP’s immediate goal is to make machine readable, or improve the readability, for 45 million pages of text from two major proprietary databases: Eighteenth Century Collections Online (ECCO) and Early English Books Online (EEBO). Generally, eMOP aims to improve the visibility of early modern texts by making their contents fully searchable. The current paradigm of searching special collections for early modern materials by either metadata alone or “dirty” OCR is inefficient for scholarly research.
- These are not big numbers by STEM standards, but for the Humanities they are: This is the largest dataset for any open-source, academic OCR project in North American, ever For the Humanities research data is about quality of content rather than size Our OCR must be as good as possible in order to generate reliable research
- Some were great most were not Noisy Skewed Warped Or they posed challenges for OCR engines Multiple pages per image Multiple columns Images & decorative elements Marginalia Missing margins many were terrible
- Dashboard provides access to the DB via an API Controller uses the Dashboard API to schedule jobs on Brazos queues and write back to the DB. It also writes output files to the NAS