Sigmoid function <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle sig(t)={\frac {1}{1+e^{-t}}}}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>s</mi><mi>i</mi><mi>g</mi><mo stretchy="false">(</mo><mi>t</mi><mo stretchy="false">)</mo><mo>=</mo><mrow class="MJX-TeXAtom-ORD"><mfrac><mn>1</mn><mrow><mn>1</mn><mo>+</mo><msup><mi>e</mi><mrow class="MJX-TeXAtom-ORD"><mo>−<!-- − --></mo><mi>t</mi></mrow></msup></mrow></mfrac></mrow></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle sig(t)={\frac {1}{1+e^{-t}}}}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b73e7ea672ff2311fa472f4e022e455c99f3f31b" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -2.171ex; width:16.783ex; height:5.509ex;" alt="{\displaystyle sig(t)={\frac {1}{1+e^{-t}}}}"></span>
<a href="//commons.wikimedia.org/wiki/User:MartinThoma" title="User:MartinThoma">MartinThoma</a>
2014-05-25
<span class="int-own-work" lang="en">Own work</span>