adjective, nounpl: sigmoids
sigmóide
1. Shaped like the letter S or having an S-shaped curve
The sigmoid curve in mathematics represents a smooth S-shaped transition.
A curva sigmóide em matemática representa uma transição suave em forma de S.
2. Relating to the sigmoid colon, the S-shaped part of the large intestine
The doctor performed a sigmoidoscopy to examine the sigmoid colon.
O médico realizou uma sigmoidoscopia para examinar o cólon sigmóide.
3. A sigmoid function used in statistics and machine learning that produces values between 0 and 1
Neural networks often use the sigmoid activation function in their hidden layers.
As redes neurais frequentemente usam a função de ativação sigmóide em suas camadas ocultas.
The term 'sigmoid' is predominantly used in medical, mathematical, and technological contexts in both English and Portuguese-speaking countries. In Brazil, it is commonly encountered in medical schools during anatomy courses and in modern tech/AI educational settings. The sigmoid colon reference is particularly important in gastroenterology, where sigmoidoscopy is a routine diagnostic procedure across both cultures.
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