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neuroimagen:bioface_atn [2021/09/09 09:56]
osotolongo [What we got so far]
neuroimagen:bioface_atn [2021/09/12 10:23]
osotolongo [Métodos no lineales]
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 </code> </code>
  
 +^ Clasificación ^ Probabilidades de N+ ^
 | {{ :neuroimagen:facehbi_nbayes_classifier.png?600 | my pretty cool neurodegeneration classifier output (FACEHBI)}} | {{ :neuroimagen:facehbi_nplus_prob_histogram.png?600 |how the probabilities are distributed?}} | | {{ :neuroimagen:facehbi_nbayes_classifier.png?600 | my pretty cool neurodegeneration classifier output (FACEHBI)}} | {{ :neuroimagen:facehbi_nplus_prob_histogram.png?600 |how the probabilities are distributed?}} |
 +
 +==== Métodos no lineales ====
 +
 +Vamos a intentar con métodos no lineales. Ojo, estos  métodos no tienen interpretación probabilistica. Son construcciones matemáticas que funcionan.
 +
 +=== random Forest ===
 +
 +** BIOFACE **
 +<code>
 +rf_cl <- randomForest(ND ~ ., data = xt, na.action = na.omit)
 +base$ND <- predict(rf_cl, newdata = base)
 +base$post <- predict(rf_cl, newdata = base, type="prob")
 +plot(base$AGE, base$Hippocampus, main = "Hippocampus Volume versus Age", xlab="Age", ylab="HV", pch=19, col=ifelse(base$ND==1,"red","green"))
 +hist(base$post[,2], col="red", density = 50, probability=TRUE, breaks = 10, main="Probabilities profile", xlab = "Probability of N+")
 +</code>
 +
 +^ Clasificación ^ Probabilidades de N+ ^
 +| {{ :neuroimagen:rf_classifier_bioface.png?600 |}} | {{ :neuroimagen:rf_prob_profile_bioface.png?600 |}} |
 +
 +**FACEHBI** 
 +
 +<code>
 +face$ND <- predict(rf_cl, newdata = face)
 +face$post <- predict(rf_cl, newdata = face, type = "prob")
 +plot(face$AGE, face$Hippocampus, main = "Hippocampus Volume versus Age", xlab="Age", ylab="HV", pch=19, col=ifelse(face$ND==1,"red","green"))
 +hist(face$post[,2], col="red", density = 50, probability=TRUE, breaks = 10, main="Probabilities profile", xlab = "Probability of N+")
 +</code>
 +
 +^ Clasificación ^ Probabilidades de N+ ^
 +| {{ :neuroimagen:rf_classifier_facehbi.png?600 |}} | {{ :neuroimagen:rf_prob_profile_facehbi.png?600 |}} |
 +
 +=== support-vector machine ===
 +
 +**BIOFACE**
 +
 +<code>
 +svm_cl <- svm(ND ~ ., data = xt, na.action = na.omit)
 +base$ND <- predict(svm_cl, newdata = base)
 +plot(base$AGE, base$Hippocampus, main = "Hippocampus Volume versus Age", xlab="Age", ylab="HV", pch=19, col=ifelse(base$ND==1,"red","green"))
 +</code>
 +
 +{{ :neuroimagen:svm_classifier_bioface.png?600 |}}
 +
 +** FACEHBI **
 +
 +<code>
 +face$ND <- predict(svm_cl, newdata = face)
 +plot(face$AGE, face$Hippocampus, main = "Hippocampus Volume versus Age", xlab="Age", ylab="HV", pch=19, col=ifelse(face$ND==1,"red","green"))
 +</code>
 +
 +{{ :neuroimagen:svm_classifier_facehbi.png?600 |}}
neuroimagen/bioface_atn.txt · Last modified: 2022/06/14 08:22 by osotolongo