Comparing Representations of Geographic Knowledge Expressed as Conceptual Graphs

2005 ◽  
pp. 1-14 ◽  
Author(s):  
Athanasios Karalopoulos ◽  
Margarita Kokla ◽  
Marinos Kavouras
Keyword(s):  
Conceptual Graphs ◽  
Geographic Knowledge

A FORMALISM FOR REPRESENTING AND REASONING WITH LINGUISTIC INFORMATION

2002 ◽  
Vol 10 (03) ◽  
pp. 281-307 ◽  
Author(s):  
TRU H. CAO
Keyword(s):  
Artificial Intelligence ◽  
Fuzzy Logic ◽  
Natural Language ◽  
Functional Relation ◽  
Computing With Words ◽  
Conceptual Graphs ◽  
Graph Language ◽  
Conceptual Graph ◽  
Knowledge Representation Language ◽  
Representation Language

Conceptual graphs and fuzzy logic are two logical formalisms that emphasize the target of natural language, where conceptual graphs provide a structure of formulas close to that of natural language sentences while fuzzy logic provides a methodology for computing with words. This paper proposes fuzzy conceptual graphs as a knowledge representation language that combines the advantages of both the two formalisms for artificial intelligence approaching human expression and reasoning. Firstly, the conceptual graph language is extended with functional relation types for representing functional dependency, and conjunctive types for joining concepts and relations. Then fuzzy conceptual graphs are formulated as a generalization of conceptual graphs where fuzzy types and fuzzy attribute-values are used in place of crisp types and crisp attribute-values. Projection and join as basic operations for reasoning on fuzzy conceptual graphs are defined, taking into account the semantics of fuzzy set-based values.

GeoAI 2019 workshop report: The 3nd ACM SIGSPATIAL International Workshop on GeoAI: AI for Geographic Knowledge Discovery

2020 ◽  
Vol 11 (3) ◽  
pp. 23-24
Author(s):  
Song Gao ◽  
Shawn Newsam ◽  
Liang Zhao ◽  
Dalton Lunga ◽  
Yingjie Hu ◽  
...  
Keyword(s):  
Knowledge Discovery ◽  
International Workshop ◽  
Workshop Report ◽  
Geographic Knowledge ◽  
Geographic Knowledge Discovery

Typification of five neotropical species of Commelina (Commelinaceae)

Phytotaxa ◽  
2018 ◽  
Vol 350 (1) ◽  
pp. 15
Author(s):  
GUSTAVO HASSEMER
Keyword(s):  
Neotropical Species ◽  
Geographic Knowledge

Aiming at contributing to the knowledge of the neotropical Commelina, I designate here lectotypes for five species: C. bangii, C. hispida, C. leiocarpa, C. quitensis and C. reflexa. Images of the lectotypes are also provided. With the exception of C. leiocarpa, taxonomic and geographic knowledge of these species is extremely deficient.

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