7th International Semantic Web Conference

Free Semantic Content: Using OpenCyc in Semantic Web Applications

author: Michael Witbrock, Cycorp Europe
author: Blaž Fortuna, Department of Knowledge Technologies, Jožef Stefan Institute
author: Marko Grobelnik, Department of Knowledge Technologies, Jožef Stefan Institute

Description

OpenCyc will be more accessible and Semantic Web interoperability will be enhanced if users are able to access just the parts of OpenCyc they need. The tutorial will describe how Semantic Web researchers and practitioners can benefit from integrating their representations with the extensive upper and middle level ontological content of the free and unrestricted OpenCyc knowledge base, and other integrative vocabularies like Okkam. The syntax of OpenCyc will be described both in raw form, and as mapped onto Semantic Web standard languages, and the content of the knowledge base will be described in overview. Based on that, we’ll show how to extend the OpenCyc KB for user applications, and how to make use of it in a web-services environment to support knowledge integration, and simple machine learning applications. Finally, we’ll demonstrate the use of the OpenCyc vocabulary to support a broad-applicability knowledge capture application, illustrative of the transition from Web2.0 to Web3.0. Hands on exercises will be used to illustrate knowledge use and construction, use of OpenCyc with inference, and use for semantic search over text in a web services environment.

Categories

Top: Computer Science: Semantic Web

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*Slides*
0:00	Free Semantic Content: Using OpenCyc in Semantic Web Applications
1:23	Introduction to Cyc
1:41	Knowledge Evolves more Quickly than Humans
3:06	Logistics (1)
4:51	Logistics (2)
4:57	Detailed Representations
5:40	Semantic Search Results
6:31	Content adaptation: heart valve repair
7:33	True Question Answering
7:51	Knowledge for People
8:12	Example
8:17	Formal Representation for Reasoning
9:15	Syntactic Power
11:28	For Inference: Senses of 'In'
13:03	The Syntax of CycL
13:44	CycL Constants
14:13	Truth Functions
14:41	CycL Sentences
15:37	Non-atomic Terms
16:41	Important Relations- #$genls
17:44	Important Relations- #$isa
18:30	Important Relations- #$prettyString
19:27	Well fomednes - #$arity
20:11	Arity - #$arity
20:20	Well-Formedness - Argument Type Constrains
21:51	Complex Formulas
22:12	Logical Connectives
22:32	Examples: Logical Connectives
22:49	Quantification
23:02	Universal Quantification
23:27	Rules using Universal Quantification (1)
24:11	Rules using Universal Quantification (2)
24:48	Unbound Variables in Rules
25:09	Existential Quantification
25:23	Example: Existential Quantification
25:48	Rules using Existential Quantification
26:11	Other Quantification
26:28	Overview of OpenCyc Content
27:08	Cyc Representation
31:24	Open and Research
33:45	Open Cyc Predicate Populations
39:25	Geospatial Knowledge
40:23	Systems and Processes
41:08	Ecosystem Classes (1)
41:34	Ecosystem Classes (2)
43:26	Some Transportation Event Types
44:28	Relating Events and Participants
47:32	Event Types
48:57	Organizational Relations
49:02	Emotions
50:01	Propositional Attitudes
50:33	Biology
51:07	Materials
51:37	Devices
52:11	Weather
52:37	Entire Cyc KB
52:53	- Weather - Questions
54:47	Entire Cyc KB
56:03	Cyc Content in RDFS and OWL
58:35	OpenCyc: left- handed person
58:49	OpenCyc: left- handed person - Source code
59:07	OpenCyc: left- handed person
59:34	- Left handed person - source code - Demonstration
62:09	OpenCyc Individual: Bill Clinton
62:21	OpenCyc Individual: Bill Clinton - Source code
63:29	OpenCyc Individual: Bill Clinton
64:51	- OpenCyc Demonstrations
82:54	Adding a term to OpenCyc
83:04	What's this Karlsruhe thing?
83:25	Existing Vocabulary
83:30	Create Constant
83:37	Constant Create operation completed
84:05	Find something similar
84:22	Copy one assertion
84:46	Karlsruhe created
87:02	Relationship with Others
87:36	Cyc cannot live by itself
88:26	Some initiatives to link data
89:01	Linking Open Data project

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