Spain

Diaz and Fernandez presented the spain instances, which contain 737 Spanish cities as demand nodes, that have to be served by 74 or 148 sources (Diaz J, Fernandez E (2006) Hybrid Scatter Search and Path Relinking for the capacitated p-median problem. European Journal of Operational Research). Additionally, they defined two particular cases with different demands and supplies for these two combinations.

spain737_74_1-SomAla-SomAla
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spain737_74_1-SomAla-PMedian
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spain737_74_2-SomAla-SomAla
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spain737_74_2-SomAla-PMedian
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spain737_148_1-SomAla-SomAla
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spain737_148_1-SomAla-PMedian
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spain737_148_2-SomAla-SomAla
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spain737_148_2-SomAla-PMedian
Problem file | Solution