KnowledgeWiki: An OpenSource Tool for Creating Community-Curated Vocabulary, with a Use Case in

Materials Science

WWW - LDOW 2016, Canada

Nishita Jaykumar, Pavankalyan Yallamelli, Vinh Nguyen,

Sarasi Lalithsena, Krishnaprasad Thirunarayan, Amit Sheth Kno.e.sis, Wright State University

Clare Paul*Air Force Research Laboratory, Wright-Patterson AFB

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• Collaboration with AFRL

Context for Research

ASM HNDBK

MILHNDBK-5

MILHNDBK-

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(Standardized Vocabularies)

SKOSDublin Core

QUDTVAEM

…

Crowdsourcing from domain

experts

Consolidated

vocabulary

(MatVocab)

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Motivating ExampleFacts:

Name Definition Source

A-Basis The mechanical property value is the value above which …

ASM Handbook, Volume 21: Composites.

ABasis A statistically-based material property; a 95% lower…

Composite Materials Handbook - Volume 1. MIL-HDBK-17F-1F, 17 June 2002

A-Basis The lower of either a statistically calculated number…

Metallic Materials and Elements for Aerospace Vehicle Structures, MIL-HDBK-5J, 31 January 2003

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Facts:Name Definition Source

YoungsModulus The ratio of normal stress to corresponding …

ASM Handbook, Volume 21: Composites.

ModulusYoungs The ratio of change in stress to change …

MIL-HDBK-17

• Same term has multiple definitions that needs to be

represented with its provenance information, that

includes data such as, source, time etc.

Motivating Example

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Related Work

Auxiliary node approach

A-Basis Auxiliary node1

…A statistically-

based material …

P26v

P26s

P580q

P582q

…

• Properties represented in the wikidata model do not

correspond to RDF properties

• Lack of formal semantics

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• Extension to Mediawiki

• We use the Semantic Form extension of Semantic

Mediawiki for our task• Inability to represent metadata about the metadata

Semantic Mediawiki

http://www.slideshare.net/cool_uk/semantic-mediawiki-simple-tutorial

Representing entities and simple metadata

The '''United Kingdom''' is a

country located in

[[Located in::Europe]].

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• Adopted the Singleton Property method for capturing

triple metadata in SMW

• Importing legacy data with provenance in bulk using

the Singleton Property method

• Importing existing RDF datasets with provenance into

SMW for curation

Our Approach

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• Adopted the Singleton Property method for capturing

triple metadata in SMW

• Importing legacy data with provenance in bulk using

the Singleton Property method

• Importing existing RDF datasets with provenance into

SMW for curation

Our Approach

Subject Predicate Object Source LicenseAutoclave hasDefinition “A closed vessel for

producing…”MIL-HDBK-17F-1F, 17

All rights reserved

Singleton PropertyFacts:

Subject Predicate Object

hasDefinition#1 rdf:sp hasDefinition

Autoclave hasDefinition#1 “A closed vessel for producing…”

hasDefinition#1 hasSource MIL-HDBK-17

hasDefinition#1 hasLicense All rights reserved

Singleton Property Translation

9"Don't like RDF reification?: making statements about statements using singleton property."Proceedings of the 23rd international conference on World wide web. ACM, 2014.

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• Formal semantics defined

• Scalable, e.g., to LOD

• Compatible with existing standards

– RDF, RDFS, SPARQL

• Can be used to capture multiple types of metadata

– Provenance, time, location

Why use Singleton Property?

Fu, Gang, et al. "Exposing Provenance Metadata Using Different RDF Models." arXiv preprint arXiv:1509.02822 (2015). Nguyen, Vinh, Olivier Bodenreider, and Amit Sheth. Hernández, Daniel, Aidan Hogan, and Markus Krötzsch. "Reifying RDF: What Works Well With Wikidata?." Proceedings of the 11th International Workshop on Scalable Semantic Web Knowledge Base Systems co-located with 14th International Semantic Web Conference (ISWC 2015), Bethlehem, PA, USA. 2015.

Property

Category

TemplateDefinition

Field

Form DefinitionWiki Article

Has a default formAssign article to a category

Identifies

Edit with Form

Uses template

Has value

for

Data type Input type

Represents

Bundled in

Is a part of

Can use (by default)

Has a Has an

Belo

ngs t

o

Semantic Mediawiki Dataflow

Singleton TemplateDefinition

Regular TemplateDefinition

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Overall Architecture

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Singleton v/s Regular Template

Autoclave

Definition TextImage

Source

Rights

Autoclave

Definition Text

Image

SourceRights

SourceRights

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Regular Vs Singleton templates

Subject Predicate ObjectAutoclave hasDefinition#1 “A closed vessel…”

hasDefinition#1 singletonPropertyOf skos:definition

hasDefinition#1 source “ASM Handbook”hasDefinition#1 license “Reproduced by…”Autoclave hasImage#1 “Image.jpg”hasImage#1 singletonPropertyOf mv:image

Subject Predicate ObjectAutoclave hasDefinition “A closed vessel…”

Autoclave source “ASM Handbook”

Autoclave license “Reproduced by…”

Autoclave hasImage “Image.jpg”

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• Singleton Templates are our enhancement to SMW

• Implemented parser function to handle the Singleton

Template parsing using magicWord

• Registering the magicWord

• Parser function responsible to handle/process the

Singleton Templates and generate the RDF triples

Implementation

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• Properties of interest to domain experts: – Definition Text– Source– License– Creator– Abbreviation– Synonyms– Units– …..

Use Case in Materials Science

mv: is matvocab namespace

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Steps to create vocabularies

Create the Form

Create the regular template and

singleton templates

Create relevant properties

Import existing vocabularies into SMW

Create Term pages

Material Manufacturing and Design From

11 Templates: 6 Singleton templates5 Regular templates

SKOS, QUDT, etc.

[[Property name:: property value]]

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MatVocab Form to create a term

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• Adopted the Singleton Property method for capturing

triple metadata in SMW

• Importing legacy data with provenance in bulk using

the Singleton Property method

• Importing existing RDF datasets with provenance into

SMW for curation

Our Approach

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• Data from Excel spreadsheet files – 3 vocabularies

• We map CSV data into the predefined 11 templates

• Some of the data mapped to regular templates

• Others mapped to singleton templates

Import legacy data with provenance

Structural Materials Vocabulary

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Statistics of the Use Case

Type SMW

1 Number of vocabularies imported 3

2 Total number of terms imported from ASM 1295

3 Total number of terms imported from MILHNDBK-5 19

4 Total number of terms imported from MILHNDBK-17 179

5 Total number of Singleton Templates created 6

6 Total number of Regular Templates created 5

7 Total number of pages created 1,685

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• Adopted the Singleton Property method for capturing

triple metadata in SMW

• Importing legacy data with provenance in bulk using

the Singleton Property method

• Importing existing RDF datasets with provenance into

SMW for curation

Our Approach

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• We developed an extension similar to the “CSV

Import”

• We experimented with the YAGO-SP2 dataset

• Ongoing work

• More details can be found in our paper

RDF import with provenance

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We enabled Semantic Mediawiki with the Singleton property model to facilitate creation

and curation of the Materials Science vocabulary with provenance metadata

To Conclude…

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Further information, please visit http://wiki.knoesis.org/index.php/KnowledgeWiki