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Overlapping Data
Plot.plot({
x:{domain:[0,10]},
y:{domain:[0,1]},
marks:[
Plot.ruleX([0]),
Plot.ruleY([0]),
Plot.dot(Xblue,{x:Xblue,y:Yblue,fill:"blue",r:5}),
Plot.dot(Xred,{x:Xred,y:Yred,fill:"red",r:5}),
Plot.line([[threshold,0],[threshold,1]],{strokeDasharray:"5,5"}),
Plot.line(x,{x:x,y:y,stroke:'red'}),
Plot.line([[0,.5],[10,.5]],{strokeDasharray:"5,5"}),
Plot.dot(X,{x:X,y:Yhat,fill:'green',r:5})
]
})
f = (x,a,b) => Math.exp(a*x + b)/(1+Math.exp(a*x + b))
x = {
const x = []
for(let i = 0; i <= 10; i = i + .1){
x.push(i)
}
return x
}
y = x.map(x => f(x,0.79000056,-4.18321431))
Yhat = X.map(X => f(X,0.79000056,-4.18321431))
penalties = X.map((X,i) =>
-Y[i]*Math.log(Yhat[i])
-
(1-Y[i])*Math.log(1-Yhat[i])
)
d3.mean(penalties)
X=[0.23172273, 6.26163653, 4.60102479, 1.66013291, 1.20244506,
4.74655952, 4.9280745 , 5.25073788, 1.77052015, 5.34931171,
4.55729522, 6.82977892, 4.41371041, 7.69073516, 7.34385488,
8.80435781, 9.43113132, 4.96859681, 9.91485443, 5.19556141]
Y = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
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