A Cloud-Computing-Based Data Placement Strategy in High-Speed Railway

Algorithm 2

Formal description.

 Pseudocode of the algorithm

Initialization:

 Device set 𝐷, Data set 𝑆, and subinterval set 𝑤;

Input: data chunk 𝑠_𝑖

Program main: 𝑘=ℎ(𝑠_𝑖);

  for(𝑗=1;𝑗<𝑛;𝑗++)

  if(𝑘∈𝑤_𝑗)

  Placing the data chunk 𝑠_𝑖 on the device 𝑑_𝑗

  Output: data volume stored on the device 𝑑_𝑗