scripts/staging/PageRank.dml

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# G: N x M, p: M x 1, e: N x 1: u: 1 x M
# ./sparkDML2.sh SystemDS.jar -f PageRank.dml -args "in/g" "in/p" "in/e" "in/u" 0.85 3 "out/w"

G = read($1);
p = read($2);
e = read($3);
u = read($4);
alpha = $5;
max_iteration = $6;
i = 0;

while( i < max_iteration ) {
  p = alpha * (G %*% p) + (1 - alpha) * (e %*% u %*% p);
  i += 1;
}

write(p, $7);