/*
* Copyright 2016 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
module.exports = function(kernelP) {
return (function() {
var Utils = require('../../utils.js');
var gKernelP = kernelP;
/**
* @classdesc
* Model produced by {@link OneVsRest}.
* This stores the models resulting from training k binary classifiers: one for each class.
* Each example is scored against all k models, and the model with the highest score
* is picked to label the example.
*
* @param labelMetadata Metadata of label column if it exists, or Nominal attribute
* representing the number of classes in training dataset otherwise.
* @param models The binary classification models for the reduction.
* The i-th model is produced by testing the i-th class (taking label 1) vs the rest
* (taking label 0).
* @class
* @memberof module:eclairjs/ml/classification
* @extends module:eclairjs/ml.Model
*/
function OneVsRestModel() {
Utils.handleConstructor(this, arguments, gKernelP);
};
/**
* @param {module:eclairjs/sql/types.StructType} schema
* @returns {StructType}
*/
OneVsRestModel.prototype.transformSchema = function(schema) {
var StructType = require('../../sql/types/StructType.js');
var args ={
target: this,
method: 'transformSchema',
args: Utils.wrapArguments(arguments),
returnType: StructType
};
return Utils.generate(args);
};
/**
* @param {module:eclairjs/sql.Dataset} dataset
* @returns {DataFrame}
*/
OneVsRestModel.prototype.transform = function(dataset) {
var DataFrame = require('../../sql/DataFrame.js');
var args ={
target: this,
method: 'transform',
args: Utils.wrapArguments(arguments),
returnType: DataFrame
};
return Utils.generate(args);
};
/**
* @param {module:eclairjs/ml/param.ParamMap} extra
* @returns {OneVsRestModel}
*/
OneVsRestModel.prototype.copy = function(extra) {
var OneVsRestModel = require('../../ml/classification/OneVsRestModel.js');
var args ={
target: this,
method: 'copy',
args: Utils.wrapArguments(arguments),
returnType: OneVsRestModel
};
return Utils.generate(args);
};
/**
* @returns {MLWriter}
*/
OneVsRestModel.prototype.write = function() {
var MLWriter = require('../../ml/util/MLWriter.js');
var args ={
target: this,
method: 'write',
returnType: MLWriter
};
return Utils.generate(args);
};
//
// static methods
//
/**
* @returns {MLReader}
*/
OneVsRestModel.read = function() {
var MLReader = require('../../ml/util/MLReader.js');
var args ={
target: OneVsRestModel,
method: 'read',
static: true,
returnType: MLReader
};
return Utils.generate(args);
};
/**
* @param {string} path
* @returns {OneVsRestModel}
*/
OneVsRestModel.load = function(path) {
var OneVsRestModel = require('../../ml/classification/OneVsRestModel.js');
var args ={
target: OneVsRestModel,
method: 'load',
args: Utils.wrapArguments(arguments),
static: true,
returnType: OneVsRestModel
};
return Utils.generate(args);
};
OneVsRestModel.moduleLocation = '/ml/classification/OneVsRestModel';
return OneVsRestModel;
})();
};