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Leonardi.DB
a logical geometry project

Detecting influential news in online communities: An approach based on hexagons of opposition generated by three-way decisions and probabilistic rough sets (2021), p. 369
by Abbruzzese, Roberto; Gaeta, Angelo; Loia, Vincenzo; Lomasto, Luigi; Orciuoli, Francesco

Caption

Opinion shifts. a) Increase of decided; b) Polarization towards positive opinions.

Logic

Aristotelian family
A Single PCD
Boolean complexity
2
Number of labels per vertex (at most)
2
Equivalence between (some) labels of the same vertex
No
Analogy between (some) labels of the same vertex
No
Uniqueness of the vertices up to logical equivalence
No
Errors in the diagram
No

Geometry

Shape
Hexagon (irregular)
Colinearity range
0
Coplanarity range
0
Cospatiality range
0
Representation of contradiction
By central symmetry

Vertex description

Conceptual info
Yes
Mnemonic support (AEIO, purpurea ...)
Yes
Form
circular
Label type
symbolic
,
iconic
Symbolic field
logic
Contains partial formulas or symbols
Yes
Logical system
syllogistics

Edge description

Contains definitions of relations
No
Form
solid lines
,
none
,
dashed lines
Has arrowheads
No
Overlap
No
Curved
No
Hooked
No
As wide as vertices
No
Contains text
No
Label type
none

Style

Diagram is colored
Yes
Diagram is embellished
No
Tags
Boolean closed
;
non-contingent formulas
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