/*
* 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 PipelineStage = require('./PipelineStage')();
/**
* @classdesc
* Abstract class for estimators that fit models to data.
* @class
* @memberof module:eclairjs/ml
* @extends module:eclairjs/ml.PipelineStage
*/
function Estimator() {
Utils.handleAbstractConstructor(this, arguments);
}
Estimator.prototype = Object.create(PipelineStage.prototype);
Estimator.prototype.constructor = Estimator;
/**
* Fits a model to the input data.
* @param {module:eclairjs/sql.Dataset} dataset
* @param {module:eclairjs/ml/param.ParamMap} [paramMap] Parameter map.
* These values override any specified in this Estimator's embedded ParamMap.
* @returns {module:eclairjs/ml.Model} fitted model
*/
Estimator.prototype.fit = function(dataset, paramMap) {
var Model = require('./Model')();
var args = {
target: this,
method: 'fit',
args: Utils.wrapArguments(arguments),
returnType: Model
};
return Utils.generate(args);
};
/**
* @param {module:eclairjs/ml/param.ParamMap} extra
* @returns {module:eclairjs/ml.Estimator}
* @abstract
*/
Estimator.prototype.copy = function(extra) {
throw "Abstract class must be implemented in extending class";
};
/**
*
* @returns {module:eclairjs/ml/param.ParamMap}
*/
Estimator.prototype.extractParamMap = function() {
var ParamMap = require('./param/ParamMap')();
var args = {
target: this,
method: 'extractParamMap',
args: Utils.wrapArguments(arguments),
returnType: ParamMap
};
return Utils.generate(args);
};
return Estimator;
})();
};