food.readme

用能量函数布局网络图

Data Format:
In a psychological experiment, a group of 38 subjects was asked to sort 
45 foods into as many categories as they wished, based on perceived 
similarity.  Each line contains two foods and the number of subjects 
who placed both foods in a common category.

Data Source: Page 100-102 of:
Lawrence Hubert, Phipps Arabie, and Jacqueline Meulman.
Combinatorial Data Analysis: Optimization by Dynamic Programming
SIAM, Philadelphia, 2001

Data first studied in:
Brian H. Ross and Gregory L. Murphy.
Food for Thought: Cross-Classification and Category Organization in a Complex Real-Dorld Domain.
Cognitive Psychology 38, 495-553, 1999