1. Royal Netherlands Academy of Arts and Sciences
(KNAW)
International Institute of Social History (IISG)
Library Applications Workflow
Vyacheslav Tykhonov
mailto: vty@iisg.nl
October 18, 2012

2. Software Tools Overview

Evergreen library system (core) with external
applications developed in IISG

Digital Repository to store metadata and files
(images, video, audio, etc)

OCR service to convert images to text

VisualMets Viewer to browse scans

HiTIME project for Named Entity Recognition

Search (VuFind) as interface to access linked
metadata

3. Evergreen applications overview

Charts Builder

GeoLocator

Visual Timelines

Custom Reports

Open Archives Initiative Protocol (OAI) for
Metadata Harvesting (for VuFind/Wordcat,...)

ISBN reader

Related bibliographic records finder

Authority linking application

4. Evergreen Charts Builder
http://evergreen.iisg.nl/charts/report.1900.html

5. Charts Builder with filtering by
country/language/dates
Open website link

6. Evergreen GeoLocator
Example

7. OCR Service
Website Link

Optical character recognition (OCR) application
for conversion of scanned images of
handwritten, typewritten or printed text into
machine-encoded text

Texts can be stored in Digital Repository as
separate layer and used for further analysis

OCR service can recognize more than 40
languages with high accuracy

Can be trained to work in other languages too

High speed of recognition (1-2 second/page)

8. OCR Example (Dora Russel Archive)
Example

9. HiTiME Project
Go to website
HiTiME is text analysis system for the recognition
and extraction of historical events and facts
from historical sources and archives.
Named Entity Recognition process:

Persons (Dora Russel, Karl Marx, ...)

Locations (Amsterdam, the Netherlands, ...)

Dates (October 18, 2012,...)
All named entities will be stored in Knowledge
Base and can be linked, persons can create
social networks.

10. IISG resources for HiTiME
(Machine Learning)

Training on Authority Records from Evergreen
can improve accuracy and recall of Named
Entity Recognition (NER)

Evergreen marc21 records for Topic Detection
and Tracking (for example, 6XX Subject Access
Fields, etc..)

IISG archives and collections can be used to
create corpus of related documents

11. HiTiME - BWSA 2.0 Demo
http://ilk.uvt.nl/hitime/bwsa_tmp/

12. HiTiME – Example
Demo

13. Combining of Tools: OCR + HiTIME
Open Application

14. Visual Mets + OCR + NER
Demo

15. Visual Timeline Application
Example

16. Questions?
International Institute of Social History (IISG)
Royal Netherlands Academy of Arts and Sciences
(KNAW)
Digital Infrastructure Department (DI)
Vyacheslav Tykhonov
Library Systems Developer
mailto: vty@iisg.nl