| // Copyright (c) 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // Experimental Translation Assist Model to allow/suppress translation prompts. |
| |
| syntax = "proto2"; |
| |
| option optimize_for = LITE_RUNTIME; |
| |
| import "translate_ranker_model.proto"; |
| import "generic_logistic_regression_model.proto"; |
| |
| package assist_ranker; |
| |
| // Metadata for a ranker model instance. This data describes how the ranker |
| // model should be interpreted/used. |
| message RankerModelMetadata { |
| // An identifier denoting the type or purpose of this model. E.g. "Translate". |
| optional string name = 1; |
| |
| // An identifier denoting the specific instance of this model. For example: |
| // "Experiment B" |
| optional string label = 2; |
| |
| // An identifier, typically a URL, denoting the source from which this model |
| // was obtained. The model referenced with a given source is presumed to be |
| // immutable; this can be used as a cache control mechanism. If the currently |
| // configured model source matches the source of a cached model, and the |
| // cached model has not expired then there is no need to refresh the model. |
| optional string source = 3; |
| |
| // The timestamp at which this model was downloaded. This will be set by the |
| // model loader before it caches the model to disk. |
| optional int64 last_modified_sec = 4; |
| |
| // The (optional) number of seconds after which this model should be |
| // considered expired. If the value is zero or not set, then the cached |
| // instance of the model never expires. A new download can be triggered by |
| // changing the configured source URL for the model loader. |
| optional int64 cache_duration_sec = 5; |
| |
| // The version of the model. E.g. 20171027. |
| optional uint32 model_version = 6; |
| |
| // If true, feature names are hex hashes of the original feature names, and |
| // hashing must be applied on feature names at prediction time. |
| optional bool input_features_names_are_hex_hashes = 7; |
| } |
| |
| // Defines an envelope/wrapper for general models. |
| message RankerModelProto { |
| // Metadata. |
| optional RankerModelMetadata metadata = 1; |
| |
| oneof model { |
| TranslateRankerModel translate = 2; |
| GenericLogisticRegressionModel logistic_regression = 3; |
| } |
| } |