A Biobjective Fuzzy Integer-Nonlinear Programming Approach for Creating an Intelligent Location-Aware Service

Table 1

Differences between the proposed methodology and some existing methods.

Method	General methodology or technology	Emphasis	Number of objectives
Kotsakis and Ketselidis [13]	Linguistic modeling	Correctness of recommendation	Single
Mateo et al. [14]	Fuzzy inference rules	Correctness of recommendation	Single
Anagnostopoulos and Hadjiefthymiades [15]	Linguistic modeling and Fuzzy inference rules	Correctness of recommendation	Single
Chen et al. [16]	Fuzzy inference rules	Correctness of recommendation	Single
The proposed methodology	Fuzzy integer nonlinear programming	Correctness and timeliness of recommendation	Biobjective