2
Knowledge graphs at SIGIR
[Fang et al: Transformer-based Reasoning [...] on Temporal Knowledge Graph]
[Zhang et al: NativE: Multi-modal Knowledge Graph Completion in the Wild]
[Zhao et al: Contrast then Memorize]
[Wang et al: Amazon-KG]
A knowledge graph (also: knowledge base) is a graph where the nodes are entities
and the edges are relations between these entities. Knowledge graphs are popular at SIGIR:
3
[Weikum, Dong, Razniewski, Suchanek: Machine Knowledge, Found. & Trends in Databases, 2021]
Knowledge graphs in search
•
a huge fraction of searches is about named entities
Human
Entity
type
subclass
born
Singer
subclass
1935-01-08
Knowledge graph
4
[Weikum, Dong, Razniewski, Suchanek: Machine Knowledge, Found. & Trends in Databases, 2021]
•
a huge fraction of searches is about named entities
in 50% of Google searches users
are happy with the knowledge card, and click no link
Human
Entity
type
subclass
born
Singer
subclass
1935-01-08
Knowledge graphs in search
Knowledge graph
5
[Weikum, Dong, Razniewski, Suchanek: Machine Knowledge, Found. & Trends in Databases, 2021]
•
a huge fraction of searches is about named entities
•
some queries ask for properties of entities
•
some queries ask for entities by properties
Human
Entity
type
subclass
born
Singer
subclass
1935-01-08
Knowledge graphs in search
Knowledge graph
6
[Weikum, Dong, Razniewski, Suchanek: Machine Knowledge, Found. & Trends in Databases, 2021]
•
a huge fraction of searches is about named entities
•
some queries ask for properties of entities
•
some queries ask for entities by properties
•
some queries require joint reasoning
Human
Entity
type
subclass
born
Singer
subclass
1935-01-08
Knowledge graphs in search
Knowledge graph
7
[Weikum, Dong, Razniewski, Suchanek: Machine Knowledge, Found. & Trends in Databases, 2021]
•
a huge fraction of searches is about named entities
•
some queries ask for properties of entities
•
some queries ask for entities by properties
•
some queries require joint reasoning
•
knowledge graphs help with auto‐completion
Human
Entity
type
subclass
born
Singer
subclass
1935-01-08
Knowledge graphs in search
Knowledge graph
8
Many Knowledge Graphs for different purposes
Huge KB, created by volunteers
Huge multiligual KB from several sources
no schema
no taxonomy
Lexicon of the English language
no instances
Semantic network about the meanings of words
no instances