Random uniform instances for the ISHOP-U in:
Ornelas, F.; Santiago, A.; Martínez, S.I.; Ponce-Flores, M.P.; Terán-Villanueva, J.D.; Balderas, F.; Rocha, J.A.C.; García, A.H.; Laria-Menchaca, J.; Treviño-Berrones, M.G. The Internet Shopping Optimization Problem with Multiple Item Units (ISHOP-U): Formulation, Instances, NP-Completeness, and Evolutionary Optimization. Mathematics 2022, 10, 2513. https://doi.org/10.3390/math10142513
Gaussian instances for the ISHOP-U (14 March 2025) in:
Ornelas F, García AH, Santiago A, Ibarra Martínez S, Castán Rocha JA, Balderas F, Laria-Menchaca J, Treviño-Berrones MG (2025) Integer Programming, low complexity Heuristics, and Gaussian instances for the Internet Shopping Optimization Problem with multiple item Units (ISHOP-U). JUCS - Journal of Universal Computer Science 31(3): 298-309. https://doi.org/10.3897/jucs.150245
Other publications:
Del-Angel, Jazmin, Santiago, Alejandro, Ibarra-Martínez, Salvador, Castán-Rocha, José Antonio, & Treviño-Berrones, Mayra Guadalupe. (2024). A Linear Genetic Programming Approach for the Internet Shopping Optimization Problem with Multiple Item Units (ISHOP-U). Computación y Sistemas, 28(3), 1687-1693. Epub 21 de enero de 2025.https://doi.org/10.13053/cys-28-3-5165
Ornelas, F., Santiago, A., Castan Rocha, J.A., Ibarra Martínez, S., García, A.H. (2024). Warm Starting Integer Programming for the Internet SHopping Optimization Problem with Multiple Item Units (ISHOP-U). In: Pedrycz, W., Rivera, G., Fernández, E., Meschino, G.J. (eds) Artificial Intelligence in Prescriptive Analytics. Intelligent Systems Reference Library, vol 260. Springer, Cham. https://doi.org/10.1007/978-3-031-66731-2_7
Ornelas F, García AH, Santiago A, Ibarra Martínez S, Castán Rocha JA, Balderas F, Laria-Menchaca J, Treviño-Berrones MG (2025) Integer Programming, low complexity Heuristics, and Gaussian instances for the Internet Shopping Optimization Problem with multiple item Units (ISHOP-U). JUCS - Journal of Universal Computer Science 31(3): 298-309. https://doi.org/10.3897/jucs.150245
Castán Rocha, J. A., Santiago, A., Ibarra Martínez, S., Laria-Menchaca, J., Terán-Villanueva, J. D., & Santiago, J. (2025). A Multi-Objective Formulation for the Internet Shopping Optimization Problem with Multiple Item Units. Applied Sciences, 15(9), 4700. https://doi.org/10.3390/app15094700