After an exhausting Wednesday, I decided to take a good rest on Thursday.
I am glad that I went to the lecture because it taught me new things. As I mentioned, I was able to finish the homework in a day though I am curious about the backtracking problem - how come the heuristic is so fast? As it turns out, what it does is to accelerate the search such that it reach to the constraints faster.
This is a good insight. If one devise a search, the key is to always make it work with an optimizing criterion sooner such that some paths can be pruned out. Simple insight but it's highly useful.
I also learned that I am not allowed to use POJOs in the homework. Bummer, this won't kill me, though I might need to spend some time with the homework and revise - it's expected though, after all it is a graduate course.
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