<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <HTML ><HEAD ><TITLE >fann_set_activation_hidden_steepness</TITLE ><link href="../style.css" rel="stylesheet" type="text/css"><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Fast Artificial Neural Network Library" HREF="index.html"><LINK REL="UP" TITLE="Get and set activation function steepness." HREF="x2399.html#api.sec.steepness.deprecated"><LINK REL="PREVIOUS" TITLE="fann_get_activation_hidden_steepness" HREF="r2437.html"><LINK REL="NEXT" TITLE="fann_get_activation_output_steepness" HREF="r2478.html"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Fast Artificial Neural Network Library</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="r2437.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="r2478.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="api.fann_set_activation_hidden_steepness" ></A >fann_set_activation_hidden_steepness</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN2456" ></A ><H2 >Name</H2 >fann_set_activation_hidden_steepness -- Set the steepness of the activation function of the hidden layers.</DIV ><DIV CLASS="refsect1" ><A NAME="AEN2459" ></A ><H2 >Description</H2 ><code class="methodsynopsis" > <span class="type" >void </span >fann_set_activation_hidden_steepness(<span class="methodparam" ><span class="type" >struct fann * </span ><span class="parameter" >ann</span ></span ><span class="methodparam" >, <span class="type" >fann_type </span ><span class="parameter" >steepness</span ></span >); </code ><P > Set the steepness of the activation function of the hidden layers of <VAR CLASS="parameter" >ann</VAR > to <VAR CLASS="parameter" >steepness</VAR >. </P ><P > The steepness defaults to 0.5 and a larger steepness will make the slope of the activation function more steep, while a smaller steepness will make the slope less steep. A large steepness is well suited for classification problems while a small steepness is well suited for function approximation. </P ><P > This function is deprecated and will be removed in a future version. Use <A HREF="r1112.html" ><CODE CLASS="function" >fann_set_activation_steepness_hidden</CODE ></A > instead. </P ><P >This function appears in FANN >= 1.0.0. and is deprecated in FANN >= 1.2.0.</P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="r2437.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="r2478.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >fann_get_activation_hidden_steepness</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="x2399.html#api.sec.steepness.deprecated" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >fann_get_activation_output_steepness</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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