str(findstr(date_str,<span class=quotes>':'</span>))&nbsp;=&nbsp;<span class=quotes>'.'</span>;<br>
sec=clock;<br>
date_str&nbsp;=&nbsp;[date_str&nbsp;<span class=quotes>'-'</span>&nbsp;num2str(sec(<span class=keyword>end</span>))];<br>
<br>
<br>
<span class=comment>%&nbsp;names&nbsp;of&nbsp;temporary&nbsp;files&nbsp;</span><br>
examples_file&nbsp;=&nbsp;[<span class=quotes>'tmp_examples'</span>&nbsp;date_str&nbsp;<span class=quotes>'.txt'</span>];<br>
model_file&nbsp;=&nbsp;[<span class=quotes>'tmp_model'<