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  • #28
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Created Jan 26, 2016 by bow@w.arindrarto

Use MongoDB aggregation framework for computing statistics

Some of the statistics not computable by MongoDB 3.0's aggregation framework (e.g. standard deviation) can now be computed in MongoDB 3.2. We should look into how far it is possible to replace the current MapReduce approach with this instead, as MapReduce tend to be quite slow.

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