Dear HTM Community, I’m hoping that you guys can help me with an experiment for my dissertation. I need ideas on how to encode World Airport Codes so that they have semantic meaning and am asking for your help. I’m thinking that I need to create some type of location relationship for each of the air…

[image] barnettjv: how to encode World Airport Codes so that they have semantic meaning What are your data constraints? How many bits do you have to store one value?

There really isn’t any data constraint as there are exactly 293 World Airport Codes in the file (i.e. “LAX”). As far as the number of bits, I suppose we can use as many as we need.

Oh do you mean the constraints for lat/long? The lat/long for “LAX” is 33.9416° N, 118.4085° W, I suppose I could convert this to a x,y coordinate system. Is this what you mean?

In what dimensions do you want to compare airports? An xy position like lat/lon is one. What about altitude? Size of the airport? I’m sure there are a lot of semantics you might want to encode.

I see. Well, normally I would say yes to x,y coord, altitude and size of the airport, but the other classifiers that I’m comparing against only get the wac code which is only one feature. Do you think it would invalidate the comparison if we encode additional features?[image]

While I have many disagreements with the work of Chomsky there was a bit that he said in an interview that sums up my feeling about predicting late flights: Chomsky: It became … well, which is understandable, but would, of course, direct people away from the original questions. I have to say, mysel…

Thank you for your well informed response. Ultimately I’m am just replicating the experiments from published worked which compares different classifiers against 9 different data sets (one of which is the airline file in my earlier post). So because all of the classifiers are given the same data fil…

Since there are “only” 293 WACs, maybe I should just build a look up table inside my htmClassifier.py file that takes the 3 letter string and builds an encoding from concatenating x,y cord, altitude, and size??? Thoughts? ¯\(ツ)/¯

Ideas needed for encoding World Airport Codes and Airlines

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Ideas needed for encoding World Airport Codes and Airlines

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