Created
March 17, 2015 20:23
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centering matrix
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| centering(n::Int) = eye(n) - ones(n) * ones(n)' / n | |
| centering{T<:Real}(n::Int, w::Vector{T}) = eye(n) - ones(n) * w' | |
| normalize{T<:Real}(v::Vector{T}) = vec(v) / sum(v) |
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