The ‘K’ in ‘Semantic Web’ Stands for ‘Knowledge’

Wouter Beek (

19th June 2018

[1/6] Quantity Assumption: There is little data

LOD Laundromat Stack

Chapter 2: Scaling Data Cleaning to the Web

[2/6] Quality Assumption: Statements are well-defined and interpretable

Most data cannot be read (e.g. Freebase 14%).

Chapter 4: Scaling Data Quality to the Web

[3/6] Accessibility Assumption:
Data can be easily (re)used

Chapter 3&5: Scaling Querying/Metadata to the Web

[4/6] Homogeneity Assumption: Results obtained over 1 or 2 datasets can be generalized to all datasets

Chapter 6: Scaling Evaluations to the Web

[5/6] Context-independence Assumption: Meaning is independent of context

Things can be (considered) the same in some,
but not all contexts.

Chapter 7: Scaling identity to the Web

[6/6] Declarativeness Assumption: Meaning is captured by formal semantics over declarative statements

Graph A

abox:store tbox:sells abox:tent    .
abox:tent  tbox:costs "¥150,000"   .
abox:tent  rdf:type   abox:Product .
Graph B

fy:aHup   pe:ko9sap_ fy:jufn12     .
fy:jufn12 pe:oao9_   "Ufou"        .
fy:jufn12 rdf:type   fyufnt:tmffqt .
Chapter 8: Scaling Naming to the Web

The ‘K’ in ‘Semantic Web’ Stands for ‘Knowledge’

Thanks for your attention!

And thanks to Frank & Stefan!