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This paper considers several portfolio selection problems considering Socially Responsible Investment (SRI), which is the most important measure to sustain continuous developments of companies by performing environment-friendliness and suitable social activity, and which is also essential for avoiding the latent risk. Corporate Social Responsibility (CSR)… (More)

- Takashi Hasuike, Hideki Katagiri, Hiroaki Ishii
- Fuzzy Sets and Systems
- 2007

- Takashi Hasuike, Hideki Katagiri, Hiroaki Ishii
- FUZZ-IEEE
- 2008

- Takashi Hasuike, Hiroaki Ishii
- FUZZ-IEEE
- 2009

- Hideki Katagiri, Takashi Hasuike, Hiroaki Ishii
- SMC
- 2008

- Takashi Hasuike, Hiroaki Ishii
- Computers & Industrial Engineering
- 2009

This paper proposes a 0-1 knapsack problem considering both the maximization of the total return including randomness and minimization of available budget, simultaneously. For the flexibility of setting each goal, the satisfaction function is introduced and the model maximizing minimum aspiration levels is proposed. Since this problem is not a well-defined… (More)

- Takashi Hasuike, Hideki Katagiri, Hiroe Tsubaki, Hiroshi Tsuda
- 2014 IEEE 7th International Workshop on…
- 2014

This paper proposes a sightseeing route planning problem by electric vehicle with time-dependency of traveling times between any two sightseeing sites. In order to represent the time-dependency, Time-Expanded Network (TEN), which contains a copy to the set of nodes in the underlying static network for each discrete time step, is introduced. In addition, it… (More)

- Takashi Hasuike, Hiroaki Ishii
- IFSA/EUSFLAT Conf.
- 2009

This paper considers a portfolio selection problem with type-2 fuzzy future returns involving ambiguous and subjectivity. Since this proposed problem is not well-defined due to fuzziness, introducing the fuzzy goal for the total future return and the degree of possibility, the main problem is transformed into the standard fuzzy programming problem including… (More)

- Takashi Hasuike, Takumi Ichimura
- Journal of Intelligent and Fuzzy Systems
- 2013

This paper proposes an approach to analyze the tourism information and data derived from the Web, particularly seat availability data of bullet trains in Japan, and to discover some useful knowledge for the tourism. For the fast development of information and communication technologies, the relation between the web data and tourism is inseparable. However,… (More)