An Abstract Description Method of Map-Reduce-Merge Using Haskell

<table><tr><td><table class="algorithm" id="alg9"><tr><td colspan="2">mergeTwoRecord KV1@(K21, V31) KV2@(K22, V32)</td></tr><tr><td colspan="2">  ∣ match K21 K22 = Just $ mergeResult KV1 KV2</td></tr><tr><td colspan="2">  ∣ otherwise = Nothing </td></tr></table></td></tr></table>

Mathematical Problems in Engineering

alg9

Algorithm 9

Algorithm 9: An Abstract Description Method of Map-Reduce-Merge Using Haskell 