Widget:WJG Sandbox Merge: Difference between revisions

@@ Line 1,065: / Line 1,065: @@
 $("#details").slideToggle("slow");
 }
+function convolve_bernouli(qprobs){
+//takes in an array of probabilities of guessing questions correct
+for (var counter = 0; counter < qprobs.length; counter++) {
+	//if the loop is in the first iteration, then initialize the array
+	if (counter==0){
+	    var pdfArray=[1-qprobs[0],qprobs[0]];
+	}else{
+	    //initialize new Array for pdfs
+	    var newpdfArray= [];
+	   for (var i = 0; i < pdfArray.length+1; i+=1) {
+	        newpdfArray[i]=0;
+	    }
+	    //multiply by ones first
+	   for (var i = 0; i < pdfArray.length; i+=1) {
+	        newpdfArray[i+1]+=pdfArray[i]*qprobs[counter]; //probability of adding a success
+	        newpdfArray[i]+=pdfArray[i]*(1-qprobs[counter]);
+	    }
+	    pdfArray=newpdfArray;
+	}
+}
+console.log(pdfArray);
+return(pdfArray);
+}//ends convolve_bernouli
 function endExam(event) {
 	if (window.exam.timer) {

Revision as of 01:27, 11 August 2014