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module OpenTox
module Algorithm
class Regression
def self.weighted_average descriptors:nil, neighbors:, parameters:nil
# TODO: prediction_interval
weighted_sum = 0.0
sim_sum = 0.0
neighbors.each do |neighbor|
sim = neighbor["similarity"]
activities = neighbor["measurements"]
activities.each do |act|
weighted_sum += sim*act
sim_sum += sim
end if activities
end
sim_sum == 0 ? prediction = nil : prediction = weighted_sum/sim_sum
{:value => prediction}
end
end
end
end
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