[OTDev] Location of permanently stored data
Christoph Helma helma at in-silico.deMon Oct 12 13:11:46 CEST 2009
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Excerpts from Nina Jeliazkova's message of Thu Oct 08 10:42:24 +0200 2009: > Hello All, > > I have posted a question related to this issue at yahoo REST group, > hopefully we'll have some enlightenment from REST gurus > http://tech.groups.yahoo.com/group/rest-discuss/message/13728 . > > Thinking aloud, here is a proposal : > > * Introduce a Prediction resource (well, REST says if you have > troubles how to map something to the REST style, invent a new > resource). This is basically a Dataset, generated by applying a > Model on another Dataset, so the representation formats are the > same as for the Dataset resource. > * GET on Prediction has the same behaviour as for the Dataset. > * POST on Prediction accept as parameters Dataset URI and Model URI > and essentially creates a new Dataset . Upon creation, the Model > resource will be contacted , it will generate the predictions and > return them in some representation. The representation will be > used to create the Prediction URI. Now for this to work POST on > Model resource should return representation of the predictions, > not an URI. There can be even separate implementation of the > Prediction resource, depending on if Model is remote or a local > resource, but this is transparent for the outside. > > This decouples the locations of the original and predicted dataset and > the model. The drawback I see is Model may be less RESTfull (e.g. not > creating URI upon POST, but I think this is acceptable for a POST > operation). > > What do you think? I am presently using something along these lines, but without an explicit prediction resource. The basic workflow is descriptor calculation: POST /algorithm/{descriptor_calculation_id} dataset_uri: returns feature_dataset_uri model creation: POST /algorithm/{model_creation_id} dataset_uri, feature_dataset_uri: returns model_uri descriptor calculation for unknown compounds: POST /algorithm/{descriptor_calculation_id} new_dataset_uri: returns new_feature_dataset_uri prediction: POST /model/{model_id} new_feature_dataset_uri: returns prediction_dataset_uri get predictions: GET prediction_dataset_uri The only problem that I have so far with this procedure, is that I want to provide supporting information (in my case neighbors, relevant features, ...) together with my prediction. This does not fit into our compound - features model of a dataset, so I am thinking about using a separate prediction (or model/{id}/prediction/{id}) resource for this purpose. Algorithm and model services read the location of the dataset service from a configuration file. Best regards, Christoph
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