Text Case-Based Reasoning Framework for Fault Diagnosis and Predication by Cloud Computing

Algorithm 4

MapReduce algorithm for case retrieval and ranking.

 begin

   Map(key, value);

   read new fault records with reduced fault attributes;

   compute a similarity value by the calculated attribute weight;

   find the most similarity value by comparison with CB;

   output <key=case index, value=similarity value>;

   Reduce(key, value);

   find the largest similar index;

   output <key=similarity value, value=case index>

 end