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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.commons.math.estimation;
/**
* This interface represents an estimation problem.
*
* <p>This interface should be implemented by all real estimation
* problems before they can be handled by the estimators through the
* {@link Estimator#estimate Estimator.estimate} method.</p>
*
* <p>An estimation problem, as seen by a solver is a set of
* parameters and a set of measurements. The parameters are adjusted
* during the estimation through the {@link #getUnboundParameters
* getUnboundParameters} and {@link EstimatedParameter#setEstimate
* EstimatedParameter.setEstimate} methods. The measurements both have
* a measured value which is generally fixed at construction and a
* theoretical value which depends on the model and hence varies as
* the parameters are adjusted. The purpose of the solver is to reduce
* the residual between these values, it can retrieve the measurements
* through the {@link #getMeasurements getMeasurements} method.</p>
*
* @see Estimator
* @see WeightedMeasurement
*
* @version $Revision: 811786 $ $Date: 2009-09-06 11:36:08 +0200 (dim. 06 sept. 2009) $
* @since 1.2
* @deprecated as of 2.0, everything in package org.apache.commons.math.estimation has
* been deprecated and replaced by package org.apache.commons.math.optimization.general
*
*/
@Deprecated
public interface EstimationProblem {
/**
* Get the measurements of an estimation problem.
* @return measurements
*/
WeightedMeasurement[] getMeasurements();
/**
* Get the unbound parameters of the problem.
* @return unbound parameters
*/
EstimatedParameter[] getUnboundParameters();
/**
* Get all the parameters of the problem.
* @return parameters
*/
EstimatedParameter[] getAllParameters();
}
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