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66  <div class="navpath"><b>bdm</b>::<a class="el" href="classbdm_1_1MixEF.html">MixEF</a>
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69<div class="contents">
70<h1>bdm::MixEF Class Reference</h1><!-- doxytag: class="bdm::MixEF" --><!-- doxytag: inherits="bdm::BMEF" -->Mixture of Exponential Family Densities. 
71<a href="#_details">More...</a>
72<p>
73<code>#include &lt;<a class="el" href="mixtures_8h_source.html">mixtures.h</a>&gt;</code>
74<p>
75
76<p>
77<a href="classbdm_1_1MixEF-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
78<tr><td></td></tr>
79<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
80<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4efe67d414ff34a1e7534004fd061241"></a><!-- doxytag: member="bdm::MixEF::MixEF" ref="4efe67d414ff34a1e7534004fd061241" args="(const Array&lt; BMEF * &gt; &amp;Coms0, const vec &amp;alpha0)" -->
81&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#4efe67d414ff34a1e7534004fd061241">MixEF</a> (const Array&lt; <a class="el" href="classbdm_1_1BMEF.html">BMEF</a> * &gt; &amp;Coms0, const vec &amp;alpha0)</td></tr>
82
83<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Full constructor. <br></td></tr>
84<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0266854387338ba757e6192d62907984"></a><!-- doxytag: member="bdm::MixEF::MixEF" ref="0266854387338ba757e6192d62907984" args="()" -->
85&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#0266854387338ba757e6192d62907984">MixEF</a> ()</td></tr>
86
87<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Constructor of empty mixture. <br></td></tr>
88<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="9577de85c3e3481f7c0e23cf8f87c482"></a><!-- doxytag: member="bdm::MixEF::MixEF" ref="9577de85c3e3481f7c0e23cf8f87c482" args="(const MixEF &amp;M2)" -->
89&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#9577de85c3e3481f7c0e23cf8f87c482">MixEF</a> (const <a class="el" href="classbdm_1_1MixEF.html">MixEF</a> &amp;M2)</td></tr>
90
91<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Copy constructor. <br></td></tr>
92<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#0c2a50789b30769964a909d217125ed2">init</a> (<a class="el" href="classbdm_1_1BMEF.html">BMEF</a> *Com0, const mat &amp;Data, int c=5)</td></tr>
93
94<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5bd7da667da183eed1577f11dff0c1f1"></a><!-- doxytag: member="bdm::MixEF::bayes" ref="5bd7da667da183eed1577f11dff0c1f1" args="(const vec &amp;dt)" -->
95void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#5bd7da667da183eed1577f11dff0c1f1">bayes</a> (const vec &amp;dt)</td></tr>
96
97<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Recursive EM-like algorithm (QB-variant), see Karny et. al, 2006. <br></td></tr>
98<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5c41d5a4403da6e629f6bdfc70c43d20"></a><!-- doxytag: member="bdm::MixEF::bayes" ref="5c41d5a4403da6e629f6bdfc70c43d20" args="(const mat &amp;dt)" -->
99void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#5c41d5a4403da6e629f6bdfc70c43d20">bayes</a> (const mat &amp;dt)</td></tr>
100
101<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">EM algorithm. <br></td></tr>
102<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5de521c395e93478df00d881ab8dac81"></a><!-- doxytag: member="bdm::MixEF::bayesB" ref="5de521c395e93478df00d881ab8dac81" args="(const mat &amp;dt, const vec &amp;wData)" -->
103void&nbsp;</td><td class="memItemRight" valign="bottom"><b>bayesB</b> (const mat &amp;dt, const vec &amp;wData)</td></tr>
104
105<tr><td class="memItemLeft" nowrap align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#da724da464a75e07521941e430929efa">logpred</a> (const vec &amp;dt) const </td></tr>
106
107<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4830916adef7891a207e42f39aaf787b"></a><!-- doxytag: member="bdm::MixEF::posterior" ref="4830916adef7891a207e42f39aaf787b" args="() const " -->
108const <a class="el" href="classbdm_1_1epdf.html">epdf</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><b>posterior</b> () const </td></tr>
109
110<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="edc50e9640f049b846084748b18469a2"></a><!-- doxytag: member="bdm::MixEF::epredictor" ref="edc50e9640f049b846084748b18469a2" args="() const " -->
111<a class="el" href="classbdm_1_1emix.html">emix</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#edc50e9640f049b846084748b18469a2">epredictor</a> () const </td></tr>
112
113<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Constructs a predictive density <img class="formulaInl" alt="$ f(d_{t+1} |d_{t}, \ldots d_{0}) $" src="form_20.png">. <br></td></tr>
114<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f0dfb4375fef4e61c4cb062e5bac7c8c"></a><!-- doxytag: member="bdm::MixEF::flatten" ref="f0dfb4375fef4e61c4cb062e5bac7c8c" args="(const BMEF *M2)" -->
115void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#f0dfb4375fef4e61c4cb062e5bac7c8c">flatten</a> (const <a class="el" href="classbdm_1_1BMEF.html">BMEF</a> *M2)</td></tr>
116
117<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Flatten the density as if it was not estimated from the data. <br></td></tr>
118<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="251ef6fc51757712693da5faae5317c9"></a><!-- doxytag: member="bdm::MixEF::_Coms" ref="251ef6fc51757712693da5faae5317c9" args="(int i)" -->
119<a class="el" href="classbdm_1_1BMEF.html">BMEF</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#251ef6fc51757712693da5faae5317c9">_Coms</a> (int i)</td></tr>
120
121<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Access function. <br></td></tr>
122<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="664529d52cc667383b39eeb440ccd577"></a><!-- doxytag: member="bdm::MixEF::set_method" ref="664529d52cc667383b39eeb440ccd577" args="(MixEF_METHOD M)" -->
123void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#664529d52cc667383b39eeb440ccd577">set_method</a> (MixEF_METHOD M)</td></tr>
124
125<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Set which method is to be used. <br></td></tr>
126<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d2b528b7a41ca67163152142f5404051"></a><!-- doxytag: member="bdm::MixEF::set_statistics" ref="d2b528b7a41ca67163152142f5404051" args="(const BMEF *BM0)" -->
127virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BMEF.html#d2b528b7a41ca67163152142f5404051">set_statistics</a> (const <a class="el" href="classbdm_1_1BMEF.html">BMEF</a> *BM0)</td></tr>
128
129<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">get statistics from another model <br></td></tr>
130<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bf58deb99af2a6cc674f13ff90300de6"></a><!-- doxytag: member="bdm::MixEF::bayes" ref="bf58deb99af2a6cc674f13ff90300de6" args="(const vec &amp;data, const double w)" -->
131virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BMEF.html#bf58deb99af2a6cc674f13ff90300de6">bayes</a> (const vec &amp;data, const double w)</td></tr>
132
133<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Weighted update of sufficient statistics (Bayes rule). <br></td></tr>
134<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classbdm_1_1BMEF.html">BMEF</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BMEF.html#62d2e4691bed41a1efa6b9c2e35e5c67">_copy_</a> () const </td></tr>
135
136<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="23c6a8f71f922023ab08dcb0487a86de"></a><!-- doxytag: member="bdm::MixEF::from_setting" ref="23c6a8f71f922023ab08dcb0487a86de" args="(const Setting &amp;set)" -->
137void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#23c6a8f71f922023ab08dcb0487a86de">from_setting</a> (const Setting &amp;set)</td></tr>
138
139<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This method arrange instance properties according the data stored in the Setting structure. <br></td></tr>
140<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="af0e6941ba5919cae1bc530e2181b109"></a><!-- doxytag: member="bdm::MixEF::to_string" ref="af0e6941ba5919cae1bc530e2181b109" args="()" -->
141virtual string&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#af0e6941ba5919cae1bc530e2181b109">to_string</a> ()</td></tr>
142
143<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This method returns a basic info about the current instance. <br></td></tr>
144<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="67d954d255ede776eade7334d4895790"></a><!-- doxytag: member="bdm::MixEF::to_setting" ref="67d954d255ede776eade7334d4895790" args="(Setting &amp;set) const " -->
145virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#67d954d255ede776eade7334d4895790">to_setting</a> (Setting &amp;set) const </td></tr>
146
147<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This method save all the instance properties into the Setting structure. <br></td></tr>
148<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1c314bd6d6dacb8ba78ea5eb88fd9516"></a><!-- doxytag: member="bdm::MixEF::validate" ref="1c314bd6d6dacb8ba78ea5eb88fd9516" args="()" -->
149virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1root.html#1c314bd6d6dacb8ba78ea5eb88fd9516">validate</a> ()</td></tr>
150
151<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This method TODO. <br></td></tr>
152<tr><td colspan="2"><div class="groupHeader">Mathematical operations</div></td></tr>
153<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1dee3fddaf021e62d925289660a707dc"></a><!-- doxytag: member="bdm::MixEF::bayesB" ref="1dee3fddaf021e62d925289660a707dc" args="(const mat &amp;Dt)" -->
154virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#1dee3fddaf021e62d925289660a707dc">bayesB</a> (const mat &amp;Dt)</td></tr>
155
156<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Batch Bayes rule (columns of Dt are observations). <br></td></tr>
157<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0e8ebe61fb14990abe1254bd3dda5fae"></a><!-- doxytag: member="bdm::MixEF::logpred_m" ref="0e8ebe61fb14990abe1254bd3dda5fae" args="(const mat &amp;dt) const " -->
158vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#0e8ebe61fb14990abe1254bd3dda5fae">logpred_m</a> (const mat &amp;dt) const </td></tr>
159
160<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Matrix version of logpred. <br></td></tr>
161<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="598b25e3f3d96a5bc00a5faeb5b3c912"></a><!-- doxytag: member="bdm::MixEF::predictor" ref="598b25e3f3d96a5bc00a5faeb5b3c912" args="() const " -->
162virtual <a class="el" href="classbdm_1_1mpdf.html">mpdf</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#598b25e3f3d96a5bc00a5faeb5b3c912">predictor</a> () const </td></tr>
163
164<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Constructs conditional density of 1-step ahead predictor <img class="formulaInl" alt="$ f(d_{t+1} |d_{t+h-1}, \ldots d_{t}) $" src="form_21.png">. <br></td></tr>
165<tr><td colspan="2"><div class="groupHeader">Access to attributes</div></td></tr>
166<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ff2d8755ba0b3def927d31305c03b09c"></a><!-- doxytag: member="bdm::MixEF::_drv" ref="ff2d8755ba0b3def927d31305c03b09c" args="() const " -->
167const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><b>_drv</b> () const </td></tr>
168
169<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f135ae6dce7e9f30c9f88229c7930b96"></a><!-- doxytag: member="bdm::MixEF::set_drv" ref="f135ae6dce7e9f30c9f88229c7930b96" args="(const RV &amp;rv)" -->
170void&nbsp;</td><td class="memItemRight" valign="bottom"><b>set_drv</b> (const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;rv)</td></tr>
171
172<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b38d92f17620813ad872d86e01a26e5e"></a><!-- doxytag: member="bdm::MixEF::set_rv" ref="b38d92f17620813ad872d86e01a26e5e" args="(const RV &amp;rv)" -->
173void&nbsp;</td><td class="memItemRight" valign="bottom"><b>set_rv</b> (const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;rv)</td></tr>
174
175<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5be65d37dedfe33a3671e7065f523a70"></a><!-- doxytag: member="bdm::MixEF::_ll" ref="5be65d37dedfe33a3671e7065f523a70" args="() const " -->
176double&nbsp;</td><td class="memItemRight" valign="bottom"><b>_ll</b> () const </td></tr>
177
178<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="236b3abbcc93594fc97cd86d82c1a83f"></a><!-- doxytag: member="bdm::MixEF::set_evalll" ref="236b3abbcc93594fc97cd86d82c1a83f" args="(bool evl0)" -->
179void&nbsp;</td><td class="memItemRight" valign="bottom"><b>set_evalll</b> (bool evl0)</td></tr>
180
181<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
182<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d74a8d1370c63c93ec554908ae3e6006"></a><!-- doxytag: member="bdm::MixEF::build_est" ref="d74a8d1370c63c93ec554908ae3e6006" args="()" -->
183void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#d74a8d1370c63c93ec554908ae3e6006">build_est</a> ()</td></tr>
184
185<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Auxiliary function for use in constructors. <br></td></tr>
186<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
187<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="38ca1d86e977d1c38810a3c95bf074a5"></a><!-- doxytag: member="bdm::MixEF::n" ref="38ca1d86e977d1c38810a3c95bf074a5" args="" -->
188int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#38ca1d86e977d1c38810a3c95bf074a5">n</a></td></tr>
189
190<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Number of components. <br></td></tr>
191<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="90c21ab5a2af56d4b49e2eaef6eccc08"></a><!-- doxytag: member="bdm::MixEF::Coms" ref="90c21ab5a2af56d4b49e2eaef6eccc08" args="" -->
192Array&lt; <a class="el" href="classbdm_1_1BMEF.html">BMEF</a> * &gt;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#90c21ab5a2af56d4b49e2eaef6eccc08">Coms</a></td></tr>
193
194<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Models for Components of <img class="formulaInl" alt="$\theta_i$" src="form_43.png">. <br></td></tr>
195<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e39faa70cebadc3296bd249040105e86"></a><!-- doxytag: member="bdm::MixEF::weights" ref="e39faa70cebadc3296bd249040105e86" args="" -->
196<a class="el" href="classbdm_1_1multiBM.html">multiBM</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#e39faa70cebadc3296bd249040105e86">weights</a></td></tr>
197
198<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Statistics for weights. <br></td></tr>
199<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="9413fb7f1836237aac807fb9f245e4f6"></a><!-- doxytag: member="bdm::MixEF::est" ref="9413fb7f1836237aac807fb9f245e4f6" args="" -->
200<a class="el" href="classbdm_1_1eprod.html">eprod</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#9413fb7f1836237aac807fb9f245e4f6">est</a></td></tr>
201
202<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Posterior on component parameters. <br></td></tr>
203<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a2376ddadb7573532404452d0c2dd28a"></a><!-- doxytag: member="bdm::MixEF::method" ref="a2376ddadb7573532404452d0c2dd28a" args="" -->
204MixEF_METHOD&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1MixEF.html#a2376ddadb7573532404452d0c2dd28a">method</a></td></tr>
205
206<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Flag for a method that is used in the inference. <br></td></tr>
207<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1331865e10fb1ccef65bb4c47fa3be64"></a><!-- doxytag: member="bdm::MixEF::frg" ref="1331865e10fb1ccef65bb4c47fa3be64" args="" -->
208double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BMEF.html#1331865e10fb1ccef65bb4c47fa3be64">frg</a></td></tr>
209
210<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">forgetting factor <br></td></tr>
211<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="06e7b3ac03e10017d4288c76888e2865"></a><!-- doxytag: member="bdm::MixEF::last_lognc" ref="06e7b3ac03e10017d4288c76888e2865" args="" -->
212double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BMEF.html#06e7b3ac03e10017d4288c76888e2865">last_lognc</a></td></tr>
213
214<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">cached value of lognc() in the previous step (used in evaluation of <code>ll</code> ) <br></td></tr>
215<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c400357e37d27a4834b2b1d9211009ed"></a><!-- doxytag: member="bdm::MixEF::drv" ref="c400357e37d27a4834b2b1d9211009ed" args="" -->
216<a class="el" href="classbdm_1_1RV.html">RV</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#c400357e37d27a4834b2b1d9211009ed">drv</a></td></tr>
217
218<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Random variable of the data (optional). <br></td></tr>
219<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4064b6559d962633e4372b12f4cd204a"></a><!-- doxytag: member="bdm::MixEF::ll" ref="4064b6559d962633e4372b12f4cd204a" args="" -->
220double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#4064b6559d962633e4372b12f4cd204a">ll</a></td></tr>
221
222<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Logarithm of marginalized data likelihood. <br></td></tr>
223<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="faff0ad12556fe7dc0e2807d4fd938ee"></a><!-- doxytag: member="bdm::MixEF::evalll" ref="faff0ad12556fe7dc0e2807d4fd938ee" args="" -->
224bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#faff0ad12556fe7dc0e2807d4fd938ee">evalll</a></td></tr>
225
226<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">If true, the filter will compute likelihood of the data record and store it in <code>ll</code> . Set to false if you want to save computational time. <br></td></tr>
227<tr><td colspan="2"><br><h2>Extension to conditional BM</h2></td></tr>
228<tr><td colspan="2">This extension is useful e.g. in Marginalized Particle Filter (<a class="el" href="classbdm_1_1MPF.html">bdm::MPF</a>). Alternatively, it can be used for automated connection to <a class="el" href="classbdm_1_1DS.html" title="Abstract class for discrete-time sources of data.">DS</a> when the condition is observed <br><br></td></tr>
229<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b5e8e016be16e4029c789063cb3f3b33"></a><!-- doxytag: member="bdm::MixEF::_rvc" ref="b5e8e016be16e4029c789063cb3f3b33" args="() const " -->
230const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#b5e8e016be16e4029c789063cb3f3b33">_rvc</a> () const </td></tr>
231
232<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">access function <br></td></tr>
233<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6799f4b16a6a59ed58b1d0d6e17116f4"></a><!-- doxytag: member="bdm::MixEF::condition" ref="6799f4b16a6a59ed58b1d0d6e17116f4" args="(const vec &amp;val)" -->
234virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#6799f4b16a6a59ed58b1d0d6e17116f4">condition</a> (const vec &amp;val)</td></tr>
235
236<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Substitute <code>val</code> for <code>rvc</code>. <br></td></tr>
237<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="de95c590d650b2db423d53992f0906cb"></a><!-- doxytag: member="bdm::MixEF::rvc" ref="de95c590d650b2db423d53992f0906cb" args="" -->
238<a class="el" href="classbdm_1_1RV.html">RV</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#de95c590d650b2db423d53992f0906cb">rvc</a></td></tr>
239
240<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Name of extension variable. <br></td></tr>
241<tr><td colspan="2"><br><h2>Logging of results</h2></td></tr>
242<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="adb539fa2585c8a2a91c54e5aebf330e"></a><!-- doxytag: member="bdm::MixEF::set_options" ref="adb539fa2585c8a2a91c54e5aebf330e" args="(const string &amp;opt)" -->
243virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#adb539fa2585c8a2a91c54e5aebf330e">set_options</a> (const string &amp;opt)</td></tr>
244
245<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Set boolean options from a string, recognized are: "logbounds,logll". <br></td></tr>
246<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2298ca6af9b13a78a4c9e18ab43f1827"></a><!-- doxytag: member="bdm::MixEF::log_add" ref="2298ca6af9b13a78a4c9e18ab43f1827" args="(logger &amp;L, const string &amp;name=&quot;&quot;)" -->
247virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#2298ca6af9b13a78a4c9e18ab43f1827">log_add</a> (<a class="el" href="classbdm_1_1logger.html">logger</a> &amp;L, const string &amp;name=&quot;&quot;)</td></tr>
248
249<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Add all logged variables to a <a class="el" href="classbdm_1_1logger.html" title="Class for storing results (and semi-results) of an experiment.">logger</a>. <br></td></tr>
250<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b517e1679eaa94e803ea4cd0b8efbcd7"></a><!-- doxytag: member="bdm::MixEF::logit" ref="b517e1679eaa94e803ea4cd0b8efbcd7" args="(logger &amp;L)" -->
251virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><b>logit</b> (<a class="el" href="classbdm_1_1logger.html">logger</a> &amp;L)</td></tr>
252
253<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="109c1a626a69031658e3a44e9e500cca"></a><!-- doxytag: member="bdm::MixEF::LIDs" ref="109c1a626a69031658e3a44e9e500cca" args="" -->
254ivec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#109c1a626a69031658e3a44e9e500cca">LIDs</a></td></tr>
255
256<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">IDs of storages in loggers 4:[1=mean,2=lb,3=ub,4=ll]. <br></td></tr>
257<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="398b7e7a162cf37d0022d6126495f207"></a><!-- doxytag: member="bdm::MixEF::LFlags" ref="398b7e7a162cf37d0022d6126495f207" args="" -->
258ivec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1BM.html#398b7e7a162cf37d0022d6126495f207">LFlags</a></td></tr>
259
260<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Flags for logging - same size as LIDs, each entry correspond to the same in LIDs. <br></td></tr>
261</table>
262<hr><a name="_details"></a><h2>Detailed Description</h2>
263Mixture of Exponential Family Densities.
264<p>
265An approximate estimation method for models with latent discrete variable, such as mixture models of the following kind: <p class="formulaDsp">
266<img class="formulaDsp" alt="\[ f(y_t|\psi_t, \Theta) = \sum_{i=1}^{n} w_i f(y_t|\psi_t, \theta_i) \]" src="form_40.png">
267<p>
268 where <img class="formulaInl" alt="$\psi$" src="form_41.png"> is a known function of past outputs, <img class="formulaInl" alt="$w=[w_1,\ldots,w_n]$" src="form_42.png"> are component weights, and component parameters <img class="formulaInl" alt="$\theta_i$" src="form_43.png"> are assumed to be mutually independent. <img class="formulaInl" alt="$\Theta$" src="form_44.png"> is an aggregation af all component parameters and weights, i.e. <img class="formulaInl" alt="$\Theta = [\theta_1,\ldots,\theta_n,w]$" src="form_45.png">.<p>
269The characteristic feature of this model is that if the exact values of the latent variable were known, estimation of the parameters can be handled by a single model. For example, for the case of mixture models, posterior density for each component parameters would be a BayesianModel from Exponential Family.<p>
270This class uses EM-style type algorithms for estimation of its parameters. Under this simplification, the posterior density is a product of exponential family members, hence under EM-style approximate estimation this class itself belongs to the exponential family.<p>
271TODO: Extend <a class="el" href="classbdm_1_1BM.html" title="Bayesian Model of a system, i.e. all uncertainty is modeled by probabilities.">BM</a> to use rvc. <hr><h2>Member Function Documentation</h2>
272<a class="anchor" name="62d2e4691bed41a1efa6b9c2e35e5c67"></a><!-- doxytag: member="bdm::MixEF::_copy_" ref="62d2e4691bed41a1efa6b9c2e35e5c67" args="() const " -->
273<div class="memitem">
274<div class="memproto">
275      <table class="memname">
276        <tr>
277          <td class="memname"><a class="el" href="classbdm_1_1BMEF.html">BMEF</a>* bdm::BMEF::_copy_           </td>
278          <td>(</td>
279          <td class="paramname">          </td>
280          <td>&nbsp;)&nbsp;</td>
281          <td> const<code> [inline, virtual, inherited]</code></td>
282        </tr>
283      </table>
284</div>
285<div class="memdoc">
286
287<p>
288Copy function required in vectors, Arrays of <a class="el" href="classbdm_1_1BM.html" title="Bayesian Model of a system, i.e. all uncertainty is modeled by probabilities.">BM</a> etc. Have to be DELETED manually! Prototype: <div class="fragment"><pre class="fragment"> BM* <a class="code" href="classbdm_1_1BMEF.html#62d2e4691bed41a1efa6b9c2e35e5c67">_copy_</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> <span class="keyword">new</span> BM(*<span class="keyword">this</span>);}
289</pre></div> 
290<p>Reimplemented from <a class="el" href="classbdm_1_1BM.html#40f01563651c1e4fe926189e41a6b8ab">bdm::BM</a>.</p>
291
292<p>Reimplemented in <a class="el" href="classbdm_1_1ARX.html#ca0b54c0997cfd567f49377af5def106">bdm::ARX</a>, and <a class="el" href="classbdm_1_1ARXfrg.html#420f3f195d231723f2f2329ec900de60">bdm::ARXfrg</a>.</p>
293
294<p>References <a class="el" href="bdmerror_8h_source.html#l00051">bdm_error</a>.</p>
295
296<p>Referenced by <a class="el" href="mixtures_8cpp_source.html#l00007">init()</a>.</p>
297
298</div>
299</div><p>
300<a class="anchor" name="0c2a50789b30769964a909d217125ed2"></a><!-- doxytag: member="bdm::MixEF::init" ref="0c2a50789b30769964a909d217125ed2" args="(BMEF *Com0, const mat &amp;Data, int c=5)" -->
301<div class="memitem">
302<div class="memproto">
303      <table class="memname">
304        <tr>
305          <td class="memname">void bdm::MixEF::init           </td>
306          <td>(</td>
307          <td class="paramtype"><a class="el" href="classbdm_1_1BMEF.html">BMEF</a> *&nbsp;</td>
308          <td class="paramname"> <em>Com0</em>, </td>
309        </tr>
310        <tr>
311          <td class="paramkey"></td>
312          <td></td>
313          <td class="paramtype">const mat &amp;&nbsp;</td>
314          <td class="paramname"> <em>Data</em>, </td>
315        </tr>
316        <tr>
317          <td class="paramkey"></td>
318          <td></td>
319          <td class="paramtype">int&nbsp;</td>
320          <td class="paramname"> <em>c</em> = <code>5</code></td><td>&nbsp;</td>
321        </tr>
322        <tr>
323          <td></td>
324          <td>)</td>
325          <td></td><td></td><td></td>
326        </tr>
327      </table>
328</div>
329<div class="memdoc">
330
331<p>
332Initializing the mixture by a random pick of centroids from data <dl compact><dt><b>Parameters:</b></dt><dd>
333  <table border="0" cellspacing="2" cellpadding="0">
334    <tr><td valign="top"></td><td valign="top"><em>Com0</em>&nbsp;</td><td>Initial component - necessary to determine its type. </td></tr>
335    <tr><td valign="top"></td><td valign="top"><em>Data</em>&nbsp;</td><td>Data on which the initialization will be done </td></tr>
336    <tr><td valign="top"></td><td valign="top"><em>c</em>&nbsp;</td><td>Initial number of components, default=5 </td></tr>
337  </table>
338</dl>
339
340<p>References <a class="el" href="exp__family_8h_source.html#l00107">bdm::BMEF::_copy_()</a>, <a class="el" href="mixtures_8h_source.html#l00058">build_est()</a>, <a class="el" href="mixtures_8h_source.html#l00047">Coms</a>, <a class="el" href="mixtures_8h_source.html#l00051">est</a>, <a class="el" href="mixtures_8h_source.html#l00045">n</a>, <a class="el" href="exp__family_8h_source.html#l00456">bdm::multiBM::set_parameters()</a>, and <a class="el" href="mixtures_8h_source.html#l00049">weights</a>.</p>
341
342<p>Referenced by <a class="el" href="merger_8cpp_source.html#l00064">bdm::merger_mix::merge()</a>.</p>
343
344</div>
345</div><p>
346<a class="anchor" name="da724da464a75e07521941e430929efa"></a><!-- doxytag: member="bdm::MixEF::logpred" ref="da724da464a75e07521941e430929efa" args="(const vec &amp;dt) const " -->
347<div class="memitem">
348<div class="memproto">
349      <table class="memname">
350        <tr>
351          <td class="memname">double bdm::MixEF::logpred           </td>
352          <td>(</td>
353          <td class="paramtype">const vec &amp;&nbsp;</td>
354          <td class="paramname"> <em>dt</em>          </td>
355          <td>&nbsp;)&nbsp;</td>
356          <td> const<code> [virtual]</code></td>
357        </tr>
358      </table>
359</div>
360<div class="memdoc">
361
362<p>
363Evaluates predictive log-likelihood of the given data record I.e. marginal likelihood of the data with the posterior integrated out.
364<p>Reimplemented from <a class="el" href="classbdm_1_1BM.html#50257e0c1e5b5c73153ea6e716ad8ae0">bdm::BM</a>.</p>
365
366<p>References <a class="el" href="mixtures_8h_source.html#l00047">Coms</a>, <a class="el" href="exp__family_8h_source.html#l00310">bdm::eDirich::mean()</a>, <a class="el" href="exp__family_8h_source.html#l00454">bdm::multiBM::posterior()</a>, and <a class="el" href="mixtures_8h_source.html#l00049">weights</a>.</p>
367
368<p>Referenced by <a class="el" href="merger_8h_source.html#l00344">bdm::merger_mix::evallog()</a>, and <a class="el" href="merger_8cpp_source.html#l00064">bdm::merger_mix::merge()</a>.</p>
369
370</div>
371</div><p>
372<hr>The documentation for this class was generated from the following files:<ul>
373<li><a class="el" href="mixtures_8h_source.html">mixtures.h</a><li>mixtures.cpp</ul>
374</div>
375<hr size="1"><address style="text-align: right;"><small>Generated on Wed Oct 7 17:34:47 2009 for mixpp by&nbsp;
376<a href="http://www.doxygen.org/index.html">
377<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.9 </small></address>
378</body>
379</html>
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