Negative weight graph edges?
We all have seen graphs with edge weight where the weight may represent anything from  
lengths, costs, etc ...,  but what does a negative weight edge stand for ?  
e.g lengths my apply to road lengths in real world, is there a similar analogy for negative weight ?  
Thanx
Negative weight graph edges?
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We all have seen graphs with edge weight where the weight may represent anything from  
lengths, costs, etc ...,  but what does a negative weight edge stand for ?  
e.g lengths my apply to road lengths in real world, is there a similar analogy for negative weight ?  
Thanx