Meteorological Data Analysis Using MapReduce

Algorithm 2

Input: data of each automatic station

  File 1: data of automatic station 1

  File 2: data of automatic station 2

   ⋮

  File 𝑛: data of automatic station 𝑛

Output:key^′,Value^′ pair, key ^' is the intermediate value of the clustering,

while the value^' is intermediate value associated with the same key^'

the sample distance is calculated based on Value;

the minimum distance is repeatedly calculated based on the method of

center of mass;