[OTDev] In house XML schemas for Model Objects vs the PMML schema
chung chvng at mail.ntua.grFri Oct 2 16:39:06 CEST 2009
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Dear All, In API 1.0 we accepted an XML schema for the representation of our models. This XML is small and simple and contains all meta-information about the model (user, id, name, tuning parameters, dataset uri) but no information about the parameters of the trained model. I'm not sure if this is a real problem or not since a client can use this model to perform predictions without caring about these parameters but its very easy to build such models and internally store a model in any file format (serialized weka file, PMML, LibSVM DSD files, etc...). So do we have to provide this PMML file? On the other hand, as Jorg mentioned, PMML files are widely accepted in industry while others (including me) have reported difficulty in building such models. Indeed, generating a PMML model is not straightforward in some cases and I still can't figure out how can I convert the LibSVM output into a PMML format (I'm talking about SVM models). So I'm wandering if we need to provide those models as PMML or if its ok (at least for now), to provide our In-house XMLs for Model Object.... Any Suggestions/Objections/Alternative ideas/Proposals (SOAP)? Best Regrads, Pantelis
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