Semantic Web Programming in Python an Introduction

1
Semantic Web Programming in Python an Introduction

• Biju B
• Jaganath G

2
Presentation outline

• Semantics
• Meaningful data Representation
• Triple Store
• Querying Searching semantic Data
• RDF
• SPARQL
• FOAF (Friend of a Friend)
• OWL

3
Semantics

• Semantics is the study of meaning
• Sequence of words or symbols used to convey
  enough meaning

4
Traditional Data-Modeling methods

• Tabulated Data
• Relational Data-Model

5
Tabulated Data

• Doctors Near Home

Name Address
George Xyz St
Bill Abc Rd
6
Relational Data-Model
ID Name Address
1 George Xyz St
2 Bill Abc Rd
ID Available timings
1 10 AM 1PM
1 7 PM 10 PM
2 6PM 10 PM
7
Meaningful data Representation

• Triple Three column Format
• A Triple is composed of a subject, predicate and
  object
• Triples could be represented easily in the form
  of graphs

8
Triple

• Babu bought doll
• Doll costs 20
• Subject An entity which could be person
  place or other concrete objects
• Predicate Property of the entity.
• Object could be Subject to other triples or
  literal value

9
Merging Triples

• As the Triples are represented in the form of
  graphs the merging could be done with less effort

10
Simple Query Language

• Demo

11
Feed Forward Inference

• Inferring Triple
• Geocoding
• Chain of Rules

12
RDF

• Provides standard way of expressing graphs of
  data and sharing them with other people

13
RDF Data Model

• Resource
• Serialization
• N-Triples

14
RDFLib Introduction

• Demo

15
SPARQL

• RDF Term Syntax
• Syntax for Triple Patterns
• SPARQL Queries in RDFLib

16
FOAF

• Social Network Graph Analysis
• Cloud of Data
• Consuming Linked Data

17
OWL

• Demo

18
Semantic Data Publishing

• Microformats
• Tables and Spreadsheets
• Linked Data

19
Demo
20
Conclusion