Between  information  retrieval  services  and bibliometrics  research

–new  ways  of  semantic  browsing  and  visual analytics

Rob Koopman, Shenghui Wang OCLC ResearchAndrea ScharnhorstDANS- KNAW

November 7, 2015ASIST, sigmetrics workshop

Content- New approach to find structure in

bibliographic information – ARIADNE (2 Method)- Applications: - Data curation – author disambiguation (1 Motivation)- Illustration of topics – the case of digital humanities

Topical browsing – DEMO (3)- Excursion into bibliometrics – the Berlin group challenge

(4)- Wrapping up (5)

Data curation – author disambiguation

Mapping topics, communities, research fronts, …..

Bibliometrics

Documents are similar because they:- Cite each other- Are cited together- Use the same references- Use the same vocabulary- Have the same authors

Information retrieval

Documents are similar because they:- Use the same vocabulary- - ….

ARIADNE is about similarity of entities!

Document/work, Record and Entity

…

Authors Title Journal … Reference Subject

Authors names

Topical terms

Reference

Journal

Glänzel, W.

Glanzel, W.

bibliometrics

…

…

citations … Casimir effect

N=SUM (doc)

A MARC record

title

authors

issn

deweypublisher

Demo examples

• http://thoth.pica.nl/demo/relate WorldCat

• http://thoth.pica.nl/relate ArticleFirst

• http://thoth.pica.nl/astro/relate Astrophysics data Berlin group

Dataset

● WorldCat, 300+ million records● Selected 13 million items (topical terms,

authors, ISSNs, Dewey decimal codes, publishers, subject headings)

● Represented by 6 million topical terms

But a matrix of 13M x 6M is too big to process

C: a co-occurrence matrix

R: a random matrix of +/-1

C’: approximation of C after random projection -- Semantic matrix

Koopman, R., Wang, S., Scharnhorst, A., Englebienne, G.: Ariadne’s thread: In- teractive navigation in a world of networked information. In: CHI’15 Extended Abstracts.

Step 1: Building the semantic matrix – and Dimension reduction based on Random Projection

Step 2: Interactive exploration

- Provide a simple search/text box- Calculate the top 500 most related

candidates- Find mutually related items - Convert distances to probabilities- Project to 2D

- Enhance interface with links to other spaces

Exploration of a topic

http://thoth.pica.nl/relate?input=hirsch%20index&fsize=100&ncluster=

EINS 1st PLENARY

Digital libraries

Science, ComputerScience, ontologies

Many different humanities fieldsProminently language &Literary studies

Illustration of context around a topic/field – journal view

Koopman, R., Wang, S., Scharnhorst, A., Englebienne, G.: Ariadne's thread: Interactive navigation in a world of networked information. In: CHI'15 ExtendedAbstracts. (2015)

As visual exploration of any dataset – astrophysics case

Wrapping up – future work● Compare the algorithm to other existing algorithms – benchmarking

● More metadata fields (publisher, subject, identifiers) – ongoing

● Identify further problems to which Ariadne can be applied ● Curation (e.g. author name disambiguation); ● Knowledge discovery (e.g. matching chemical molecules); ● Information science – population of libraries, subject areas, …

● Feedback from users – Prepare user scenarios for usability testing and set up an evaluation project – tbd

● Improve visualisation

● More functionality (timeline, history)

● Extend the implementation to other databases

Thank yourob.koopman@oclc.orgshenghui.wang@oclc.orgAndrea.scharnhorst@dans.knaw.nl

http://thoth.pica.nl/relate (ArticleFirst)http://thoth.pica.nl/astro/relate (Astrophysics articles)http://thoth.pica.nl/demo/relate (WorldCat)

ReferencesKoopman, R., Wang, S., Scharnhorst, A., Englebienne, G.: Ariadne's thread: Interactivenavigation in a world of networked information. In: B. Begole, J. Kim, K. Inkpen, W. Woo(eds.) Proceedings of the 33rd Annual ACM Conference Extended Abstracts on HumanFactors in Computing Systems, Seoul, CHI 2015 Extended Abstracts, Republic of Korea, April 18 - 23, 2015, pp. 1833{1838. ACM (2015). DOI 10.1145/2702613.2732781. URLhttp://doi.acm.org/10.1145/2702613.2732781 (Preprint Arxiv.org)

Koopman, R., Wang, S., Scharnhorst, A.: Contextualization of Topics - Browsing throughTerms, Authors, Journals and Cluster Allocations. In: A.A. Salah, Y. Tonta, A.A.A.Salah, C. Sugimoto, U. Al (eds.) Proceedings of ISSI 2015 Istanbul. 15th InternationalSociety of Scientometrics and Informetrics Conference, Istanbul, Turkey, 29th June to 4thJuly 2015, pp. 1042{1053. Boazici University Printhouse, Istanbul (2015). URL http://www.issi2015.org/en/Proceedings-of-ISSI-2015.html