I don't have a good answer to this question yet. This is partly because I am still learning the operational considerations. Gson was introduced because we had it and it satisfied the multilingual requirement. Beyond that I don't have a good story other than avro someday mumble.

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On Sep 22, 2010, at 6:41 AM, Sean Owen <[email protected]> wrote:

I figured there was a reason.
But what serialization mechanism? I'm getting at whether there is any
unneeded consistency in approach to serialization. (There may not be.)

On Wed, Sep 22, 2010 at 2:38 PM, Ted Dunning <[email protected]> wrote:
Actually OnlineAuc is serialized when an AdaptiveLogisticRegression is serialized. This is done to checkpoint a large incremental training run.
 That serialized form is also used in some cases to deploy a model to
production or to do model diagnostics.

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