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| <h1 title="Package" class="title">Package org.apache.commons.math3.fitting.leastsquares</h1> |
| <div class="docSummary"> |
| <div class="block">This package provides algorithms that minimize the residuals |
| between observations and model values.</div> |
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| <p>See: <a href="#package_description">Description</a></p> |
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| <th class="colFirst" scope="col">Interface</th> |
| <th class="colLast" scope="col">Description</th> |
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| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresOptimizer.html" title="interface in org.apache.commons.math3.fitting.leastsquares">LeastSquaresOptimizer</a></td> |
| <td class="colLast"> |
| <div class="block">An algorithm that can be applied to a non-linear least squares problem.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresOptimizer.Optimum.html" title="interface in org.apache.commons.math3.fitting.leastsquares">LeastSquaresOptimizer.Optimum</a></td> |
| <td class="colLast"> |
| <div class="block">The optimum found by the optimizer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares">LeastSquaresProblem</a></td> |
| <td class="colLast"> |
| <div class="block">The data necessary to define a non-linear least squares problem.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.Evaluation.html" title="interface in org.apache.commons.math3.fitting.leastsquares">LeastSquaresProblem.Evaluation</a></td> |
| <td class="colLast"> |
| <div class="block">An evaluation of a <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>LeastSquaresProblem</code></a> at a particular point.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/MultivariateJacobianFunction.html" title="interface in org.apache.commons.math3.fitting.leastsquares">MultivariateJacobianFunction</a></td> |
| <td class="colLast"> |
| <div class="block">A interface for functions that compute a vector of values and can compute their |
| derivatives (Jacobian).</div> |
| </td> |
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| <th class="colFirst" scope="col">Class</th> |
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| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/AbstractEvaluation.html" title="class in org.apache.commons.math3.fitting.leastsquares">AbstractEvaluation</a></td> |
| <td class="colLast"> |
| <div class="block">An implementation of <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.Evaluation.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>LeastSquaresProblem.Evaluation</code></a> that is designed for extension.</div> |
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| </tr> |
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| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/GaussNewtonOptimizer.html" title="class in org.apache.commons.math3.fitting.leastsquares">GaussNewtonOptimizer</a></td> |
| <td class="colLast"> |
| <div class="block">Gauss-Newton least-squares solver.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresAdapter.html" title="class in org.apache.commons.math3.fitting.leastsquares">LeastSquaresAdapter</a></td> |
| <td class="colLast"> |
| <div class="block">An adapter that delegates to another implementation of <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>LeastSquaresProblem</code></a>.</div> |
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| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresBuilder.html" title="class in org.apache.commons.math3.fitting.leastsquares">LeastSquaresBuilder</a></td> |
| <td class="colLast"> |
| <div class="block">A mutable builder for <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>LeastSquaresProblem</code></a>s.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresFactory.html" title="class in org.apache.commons.math3.fitting.leastsquares">LeastSquaresFactory</a></td> |
| <td class="colLast"> |
| <div class="block">A Factory for creating <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>LeastSquaresProblem</code></a>s.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LevenbergMarquardtOptimizer.html" title="class in org.apache.commons.math3.fitting.leastsquares">LevenbergMarquardtOptimizer</a></td> |
| <td class="colLast"> |
| <div class="block">This class solves a least-squares problem using the Levenberg-Marquardt |
| algorithm.</div> |
| </td> |
| </tr> |
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| <th class="colFirst" scope="col">Enum</th> |
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| </tr> |
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| <td class="colFirst"><a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/GaussNewtonOptimizer.Decomposition.html" title="enum in org.apache.commons.math3.fitting.leastsquares">GaussNewtonOptimizer.Decomposition</a></td> |
| <td class="colLast"> |
| <div class="block">The decomposition algorithm to use to solve the normal equations.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| </ul> |
| <a name="package_description"> |
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| <h2 title="Package org.apache.commons.math3.fitting.leastsquares Description">Package org.apache.commons.math3.fitting.leastsquares Description</h2> |
| <div class="block">This package provides algorithms that minimize the residuals |
| between observations and model values. |
| The <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresOptimizer.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>least-squares optimizers</code></a> minimize the distance (called |
| <em>cost</em> or <em>χ<sup>2</sup></em>) between model and |
| observations. |
| |
| <br/> |
| Algorithms in this category need access to a <em>problem</em> |
| (represented by a <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares"><code>LeastSquaresProblem</code></a>). |
| Such a model predicts a set of values which the algorithm tries to match |
| with a set of given set of observed values. |
| <br/> |
| The problem can be created progressively using a <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresBuilder.html" title="class in org.apache.commons.math3.fitting.leastsquares"><code>builder</code></a> or it can |
| be created at once using a <a href="../../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresFactory.html" title="class in org.apache.commons.math3.fitting.leastsquares"><code>factory</code></a>.</div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>3.3</dd></dl> |
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