sigmoidal
Gentle S-bend shape
Sigmoidal means S-shaped or resembling the Greek letter sigma (Σ).
The term appears most often in technical contexts: a sigmoidal curve in statistics rises slowly, accelerates through its middle, then levels off.
The sigmoid colon is the S-curved section of the large intestine.
In machine learning, sigmoidal activation functions map inputs to outputs between zero and one.
Double-curved form
- inflectionWord form alteration
- asymptoteUnreached bounding curve
- logisticOf coordination and supply
- dose-responseRelationship between amount and effect
saturation · threshold · transition · midpoint · steep · gradual · plateau · symmetric
Relationship between amount and effect
- hemoglobinErythrocyte's oxygen-binding protein
- saturationState of complete permeation
- activationSetting into operation
- inhibitionMental check on behavior
Purpose or duty
- equationMathematical equality assertion
- graphVisual data display
- plotStoryline or land parcel
- derivativeFunction's rate of change
integral · tangent · limit · convergence · exponential · growth · decay · optimization
S-shaped
Double-curved form
- inflectionWord form alteration
- asymptoteUnreached bounding curve
- logisticOf coordination and supply
dose-response · saturation · threshold · transition · midpoint · steep · gradual · plateau · symmetric · antisymmetric
dose-response
Relationship between amount and effect
- hemoglobinErythrocyte's oxygen-binding protein
- saturationState of complete permeation
- activationSetting into operation
inhibition · Michaelis-Menten · population growth · regulatory
function
Purpose or duty
derivative · integral · tangent · limit · convergence · exponential · growth · decay · optimization · regression
sigmoidallinear
Arranged in straight succession
straight · rectilinear · exponential · logarithmic · parabolic
sigmoidalstep function
Piecewise constant graph
discontinuous · abrupt · binary · threshold · instantaneous
sigmoidallinear
Arranged in straight succession
proportional · step function · binary · threshold · graded