On Sun, Nov 1, 2015 at 2:26 PM, Wakan Tanka <[email protected]> wrote: > 1. If this is one step ahead prediction then the prediction value on > line n should correspond to the original value on line n+1 > (assuming that NuPIC made good prediction and not mistake)?
If the prediction is perfectly right, yes. > 2. If first question is true can you please explain me the 179 line? On > line 179 there is prediction which equals 0 and on line 180 original > value equals to 0 which is OK. But why I get anomaly score 1 on line > 179? Just because the best prediction is correct does not mean that the HTM is confident that it is correct. For example, NuPIC might only be 23% confident in the best prediction it gives, in which case the anomaly score could be very high. > 3. Or you can look at it vice versa: Prediction on line 180 is equal to > 0 but the original value on line 181 is 3. So I assume prediction > was wrong. Why anomaly score on line 180 equals to 0? Does it means > that NuPIC believe that it is predicting the correct value but in > fact it was wrong? I would not pay too much attention to the anomaly score (or predictions for that matter) until the model has seen a few thousand rows of data. It looks like it has seen less than 200 rows as this point, so the anomaly scores can vary wildly until it establishes what the data patterns are. Regards, --------- Matt Taylor OS Community Flag-Bearer Numenta
