Defaults

[joshim5]

Based on the literature, a good default jumping probability is 0.15.

Right now, this is set to 1-0.15 = 0.85.

[anvaka]

@joshim5 what literature are you referencing? I implemented this based on Mining Massive Data Sets book, and their course on cursera (no longer available). I also checked wiki pages for the dumping factor which recommends it to be 0.85.

Maybe we are talking about the same value?

[joshim5]

Yes, but damping factor is 1 - jumping probability. If you read the second line, you'll see:

"The damping factor is subtracted from 1"

Think about it - a user does not randomly jump 85% of the time! 15% is much more intuitive.

[anvaka]

Correct:

ngraph.pagerank/index.js

Line 56 in 17a4442

leakedRank = (1 - leakedRank) / nodesCount;