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| 3 | <title>mixpp: mgamma Class Reference</title> |
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| [33] | 23 | <h1>mgamma Class Reference</h1><!-- doxytag: class="mgamma" --><!-- doxytag: inherits="mEF" -->Gamma random walk. |
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| [32] | 24 | <a href="#_details">More...</a> |
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| 25 | <p> |
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| 26 | <code>#include <<a class="el" href="libEF_8h-source.html">libEF.h</a>></code> |
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| 27 | <p> |
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| 28 | <div class="dynheader"> |
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| [33] | 29 | Inheritance diagram for mgamma:</div> |
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| 30 | <div class="dynsection"> |
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| 31 | <p><center><img src="classmgamma__inherit__graph.png" border="0" usemap="#mgamma__inherit__map" alt="Inheritance graph"></center> |
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| 32 | <map name="mgamma__inherit__map"> |
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| 33 | <area shape="rect" href="classmEF.html" title="Exponential family model." alt="" coords="23,84,73,111"><area shape="rect" href="classmpdf.html" title="Conditional probability density, e.g. modeling some dependencies." alt="" coords="20,7,76,33"></map> |
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| 34 | <center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div> |
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| 35 | <div class="dynheader"> |
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| [32] | 36 | Collaboration diagram for mgamma:</div> |
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| 37 | <div class="dynsection"> |
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| 38 | <p><center><img src="classmgamma__coll__graph.png" border="0" usemap="#mgamma__coll__map" alt="Collaboration graph"></center> |
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| 39 | <map name="mgamma__coll__map"> |
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| [33] | 40 | <area shape="rect" href="classmEF.html" title="Exponential family model." alt="" coords="5,284,56,311"><area shape="rect" href="classmpdf.html" title="Conditional probability density, e.g. modeling some dependencies." alt="" coords="8,204,64,231"><area shape="rect" href="classRV.html" title="Class representing variables, most often random variables." alt="" coords="45,7,83,33"><area shape="rect" title="rv\nrvc" alt="" coords="57,31,65,39"><area shape="rect" title="rv\nrvc" alt="" coords="33,200,41,208"><area shape="rect" href="classepdf.html" title="Probability density function with numerical statistics, e.g. posterior density." alt="" coords="80,105,131,132"><area shape="rect" title="rv" alt="" coords="67,31,75,39"><area shape="rect" title="rv" alt="" coords="96,101,104,109"><area shape="rect" title="ep" alt="" coords="91,129,99,137"><area shape="rect" title="ep" alt="" coords="41,200,49,208"><area shape="rect" href="classeEF.html" title="General conjugate exponential family posterior density." alt="" coords="93,204,139,231"><area shape="rect" href="classegamma.html" title="Gamma posterior density." alt="" coords="80,284,160,311"><area shape="rect" title="epdf" alt="" coords="107,308,115,316"><area shape="rect" title="epdf" alt="" coords="67,376,75,384"></map> |
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| [32] | 41 | <center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div> |
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| 42 | |
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| 43 | <p> |
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| 44 | <a href="classmgamma-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0"> |
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| 45 | <tr><td></td></tr> |
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| 46 | <tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr> |
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| 47 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="af43e61b86900c0398d5c0ffc83b94e6"></a><!-- doxytag: member="mgamma::mgamma" ref="af43e61b86900c0398d5c0ffc83b94e6" args="(const RV &rv, const RV &rvc)" --> |
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| [33] | 48 | </td><td class="memItemRight" valign="bottom"><a class="el" href="classmgamma.html#af43e61b86900c0398d5c0ffc83b94e6">mgamma</a> (const <a class="el" href="classRV.html">RV</a> &<a class="el" href="classmpdf.html#f6687c07ff07d47812dd565368ca59eb">rv</a>, const <a class="el" href="classRV.html">RV</a> &<a class="el" href="classmpdf.html#acb7dda792b3cd5576f39fa3129abbab">rvc</a>)</td></tr> |
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| [32] | 49 | |
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| 50 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <br></td></tr> |
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| 51 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a9d646cf758a70126dde7c48790b6e94"></a><!-- doxytag: member="mgamma::set_parameters" ref="a9d646cf758a70126dde7c48790b6e94" args="(double k)" --> |
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| [33] | 52 | void </td><td class="memItemRight" valign="bottom"><a class="el" href="classmgamma.html#a9d646cf758a70126dde7c48790b6e94">set_parameters</a> (double k)</td></tr> |
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| [32] | 53 | |
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| [33] | 54 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Set value of <code>k</code>. <br></td></tr> |
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| [32] | 55 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="9f40dc43885085fad8e3d6652b79e139"></a><!-- doxytag: member="mgamma::samplecond" ref="9f40dc43885085fad8e3d6652b79e139" args="(vec &cond, double &lik)" --> |
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| 56 | vec </td><td class="memItemRight" valign="bottom"><a class="el" href="classmgamma.html#9f40dc43885085fad8e3d6652b79e139">samplecond</a> (vec &cond, double &lik)</td></tr> |
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| 57 | |
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| 58 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Generate one sample of the posterior. <br></td></tr> |
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| 59 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e9d52749793f40aad85b70c6db4435ae"></a><!-- doxytag: member="mgamma::samplecond" ref="e9d52749793f40aad85b70c6db4435ae" args="(vec &cond, vec &lik, int n)" --> |
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| 60 | mat </td><td class="memItemRight" valign="bottom"><a class="el" href="classmgamma.html#e9d52749793f40aad85b70c6db4435ae">samplecond</a> (vec &cond, vec &lik, int n)</td></tr> |
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| 61 | |
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| 62 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Generate matrix of samples of the posterior. <br></td></tr> |
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| 63 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a61094c9f7a2d64ea77b130cbc031f97"></a><!-- doxytag: member="mgamma::condition" ref="a61094c9f7a2d64ea77b130cbc031f97" args="(const vec &val)" --> |
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| [33] | 64 | void </td><td class="memItemRight" valign="bottom"><a class="el" href="classmgamma.html#a61094c9f7a2d64ea77b130cbc031f97">condition</a> (const vec &val)</td></tr> |
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| [32] | 65 | |
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| [33] | 66 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Update <code>ep</code> so that it represents this <a class="el" href="classmpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> conditioned on <code>rvc</code> = cond. <br></td></tr> |
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| 67 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="80b738ece5bd4f8c4edaee4b38906f91"></a><!-- doxytag: member="mgamma::evalcond" ref="80b738ece5bd4f8c4edaee4b38906f91" args="(const vec &dt, const vec &cond)" --> |
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| 68 | virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="classmpdf.html#80b738ece5bd4f8c4edaee4b38906f91">evalcond</a> (const vec &dt, const vec &cond)</td></tr> |
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| 69 | |
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| 70 | <tr><td class="mdescLeft"> </td><td class="mdescRight">Shortcut for conditioning and evaluation of the internal <a class="el" href="classepdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>. In some cases, this operation can be implemented efficiently. <br></td></tr> |
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| 71 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ec9c850305984582548e8deb64f0ffe8"></a><!-- doxytag: member="mgamma::_rvc" ref="ec9c850305984582548e8deb64f0ffe8" args="()" --> |
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| 72 | <a class="el" href="classRV.html">RV</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmpdf.html#ec9c850305984582548e8deb64f0ffe8">_rvc</a> ()</td></tr> |
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| 73 | |
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| 74 | <tr><td class="mdescLeft"> </td><td class="mdescRight">access function <br></td></tr> |
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| 75 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e17780ee5b2cfe05922a6c56af1462f8"></a><!-- doxytag: member="mgamma::_epdf" ref="e17780ee5b2cfe05922a6c56af1462f8" args="()" --> |
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| 76 | <a class="el" href="classepdf.html">epdf</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classmpdf.html#e17780ee5b2cfe05922a6c56af1462f8">_epdf</a> ()</td></tr> |
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| 77 | |
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| 78 | <tr><td class="mdescLeft"> </td><td class="mdescRight">access function <br></td></tr> |
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| 79 | <tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr> |
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| 80 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f6687c07ff07d47812dd565368ca59eb"></a><!-- doxytag: member="mgamma::rv" ref="f6687c07ff07d47812dd565368ca59eb" args="" --> |
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| 81 | <a class="el" href="classRV.html">RV</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmpdf.html#f6687c07ff07d47812dd565368ca59eb">rv</a></td></tr> |
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| 82 | |
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| 83 | <tr><td class="mdescLeft"> </td><td class="mdescRight">modeled random variable <br></td></tr> |
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| 84 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="acb7dda792b3cd5576f39fa3129abbab"></a><!-- doxytag: member="mgamma::rvc" ref="acb7dda792b3cd5576f39fa3129abbab" args="" --> |
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| 85 | <a class="el" href="classRV.html">RV</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmpdf.html#acb7dda792b3cd5576f39fa3129abbab">rvc</a></td></tr> |
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| 86 | |
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| 87 | <tr><td class="mdescLeft"> </td><td class="mdescRight">random variable in condition <br></td></tr> |
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| 88 | <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7aa894208a32f3487827df6d5054424c"></a><!-- doxytag: member="mgamma::ep" ref="7aa894208a32f3487827df6d5054424c" args="" --> |
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| 89 | <a class="el" href="classepdf.html">epdf</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classmpdf.html#7aa894208a32f3487827df6d5054424c">ep</a></td></tr> |
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| 90 | |
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| 91 | <tr><td class="mdescLeft"> </td><td class="mdescRight">pointer to internal <a class="el" href="classepdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a> <br></td></tr> |
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| [32] | 92 | </table> |
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| 93 | <hr><a name="_details"></a><h2>Detailed Description</h2> |
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| 94 | Gamma random walk. |
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| 95 | <p> |
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| [33] | 96 | Mean value, <img class="formulaInl" alt="$\mu$" src="form_14.png">, of this density is given by <code>rvc</code> . Standard deviation of the random walk is proportional to one $k$-th the mean. This is achieved by setting <img class="formulaInl" alt="$\alpha=k$" src="form_11.png"> and <img class="formulaInl" alt="$\beta=k/\mu$" src="form_12.png">.<p> |
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| 97 | The standard deviation of the walk is then: <img class="formulaInl" alt="$\mu/\sqrt(k)$" src="form_13.png">. <hr>The documentation for this class was generated from the following files:<ul> |
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| [32] | 98 | <li>work/mixpp/bdm/stat/<a class="el" href="libEF_8h-source.html">libEF.h</a><li>work/mixpp/bdm/stat/libEF.cpp</ul> |
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| [37] | 99 | <hr size="1"><address style="text-align: right;"><small>Generated on Wed Mar 12 16:15:53 2008 for mixpp by |
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| [32] | 100 | <a href="http://www.doxygen.org/index.html"> |
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| 101 | <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address> |
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| 102 | </body> |
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| 103 | </html> |
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