org.hipparchus.optim.nonlinear.vector.leastsquares.ValueAndJacobianFunction Maven / Gradle / Ivy
/*
* 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
*
* https://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.
*/
/*
* This is not the original file distributed by the Apache Software Foundation
* It has been modified by the Hipparchus project
*/
package org.hipparchus.optim.nonlinear.vector.leastsquares;
import org.hipparchus.linear.RealMatrix;
import org.hipparchus.linear.RealVector;
/**
* A interface for functions that compute a vector of values and can compute their
* derivatives (Jacobian).
*
*/
public interface ValueAndJacobianFunction extends MultivariateJacobianFunction {
/**
* Compute the value.
*
* @param params Point.
* @return the value at the given point.
*/
RealVector computeValue(double[] params);
/**
* Compute the Jacobian.
*
* @param params Point.
* @return the Jacobian at the given point.
*/
RealMatrix computeJacobian(double[] params);
}