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Johannes Ahlmann codinguncut

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View alphabet kata
import Data.Char
char_to_pos c = ord c - ord 'a'
pos_to_char p = chr (p `mod` 26 + ord('a'))
transcode_letter op key text = pos_to_char (text_offset `op` key_offset + 26)
where [key_offset, text_offset] = map char_to_pos [key, text]
encode_letter = transcode_letter (+)
decode_letter = transcode_letter (-)
codinguncut /
Last active Mar 15, 2019
coder dojo ideas html
View gist:c4359d9bc6f36549b625

Competitive Machine Learning

  1. feature engineering (most important by far)!!!!!
  2. simple models
  3. overfitting leaderboard
  4. ensembling
  • predict the right thing!
  • build pipeline and put something on the leaderboard
  • allocate time to play with data, explore
  • make heavy use of forums
  • understand subtleties of algos, know what tool to use when
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