classify text with object javascript naive bayes classifier - javascript

I will add a wordInDoc object (word: num) if the word is in the object vocab [positive], I try with equal to but fail. Why?
this is my code
var nbayes = function(_class, docs) {
var vocab = {
positif: {
wd: ['baik', 'pintar']
},
negatif: {
wd: ['buruk', 'jelek']
}
}
var wordInDoc = {}
var sumDocs = 0;
docs = docs.split(' ')
var wd = 'wd'
for (var word of docs) {
if (word in vocab[_class][wd]) {
var delta = 1
wordInDoc[word] = 0
wordInDoc[word] += delta
sumDocs++
}
console.log(wordInDoc, sumDocs)
}
};
nbayes('positif', 'baik dan rajin')
nbayes('negatif', 'nakal dan bodoh')

Is this a solution you were looking for?
Loop through the array 'docs' then check for the index of matching in 'vocab[_class][wd]'.
Some other validation should be done for non existent classes'_class'.
var nbayes = function(_class, docs) {
var wordInDoc = {};
var sumDocs = 0;
var wd = 'wd';
var word;
var vocab = {
positif: {
wd: ['baik', 'pintar']
},
negatif: {
wd: ['buruk', 'jelek']
}
}
docs = docs.split(' ');
for (var i = 0;i < docs.length; i++) {
word = docs[i];
if (vocab[_class] && vocab[_class][wd].indexOf(word) !== -1) {
var delta = 1;
wordInDoc[word] = 0;
wordInDoc[word] += delta;
sumDocs++;
}
console.log(wordInDoc, sumDocs)
}
};
nbayes('positif', 'baik dan rajin')
nbayes('negatif', 'nakal dan bodoh')

Related

Javascript object that takes another object's property as parameter changes it somehow

I've been working on a Math Parser project. I'm almost finished but I encountered a problem that I couldn't find the reason for it.
I've got 3 javascript files:
main.js
var button1 = document.getElementById("button");
var text1 = document.getElementById("text");
var output = document.getElementById("result");
button1.addEventListener("click", function(){
var textInput = text1.value;
var cleared = new clearingUnwantedCharacters(textInput);
var marked = new subgroupMarking(cleared.output);
var prioritizedList = new subgroupPrioritization(marked.parenGroups);
for(var i = 0; i <= 360; i++){
var splittedPieces = new splittingOperators(prioritizedList.prioritizedGroups);
var calculatedPieces = new calculatePieces(splittedPieces.seperatedPieces, i, true);
console.log(calculatedPieces.result);
}
});
objects.js
function clearingUnwantedCharacters(inputText){
this.output = inputText;
this.output = this.output.replace(/\s+/g, '');
this.output = this.output.toLowerCase();
}
function subgroupMarking(inputText){
this.parenGroups = [inputText];
this.locLeftParen = markChar(this.parenGroups[0], "(");
this.locRigthParen = markChar(this.parenGroups[0], ")");
for(var i = this.locLeftParen.length-1; i >= 0; i--){
var leftParen = this.locLeftParen[i];
var rightParen = this.locRigthParen.find(function(res){return res > leftParen});
this.parenGroups[i+1] = this.parenGroups[0].substring(leftParen+1, rightParen);
this.parenGroups[0] = changeAt(this.parenGroups[0], leftParen, rightParen+1, "{_"+(i+1)+"}");
this.locLeftParen = markChar(this.parenGroups[0], "(");
this.locRigthParen = markChar(this.parenGroups[0], ")");
}
}
function subgroupPrioritization(subgroupList){
var withParenGroup = [];
var withoutParenGroup = [];
for(var i = 0; i < subgroupList.length; i++){
var content = subgroupList[i].toString();
var hasParenGroup = content.search(/{_\d+}/g);
if(hasParenGroup == -1){
withoutParenGroup.push(content);
}else{
withParenGroup.push(content);
}
}
this.prioritizedGroups = withParenGroup.concat(withoutParenGroup);
}
function splittingOperators(prioritizedGroupList){
this.seperatedPieces = [];
for(var i = prioritizedGroupList.length-1; i >= 0; i--){
var pieces = prioritizedGroupList[i].split(/(\+|\*|\/|\^|\b(?=-)|(?<=})(?=-))/g);
for(var k = 0; k < pieces.length; k++){
if(pieces[k] == ""){
pieces[k] = "+";
}
}
this.seperatedPieces.unshift(pieces);
}
}
function calculatePieces(pieceList, x, degreeOption){
this.result = pieceList;
for(var i = this.result.length-1; i >= 0; i--){ // ["34", "+", "2{_2}"]
for(var k = 0; k < this.result[i].length; k++){ // 34, +, 2{_2}
var specialFlag = false;
var totalMultiplication = (countChar(this.result[i][k], "-")%2 == 0) ? 1 : -1;
var has = {
x : this.result[i][k].includes("x"),
subgroup : (this.result[i][k].search(/{_\d+}/g) != -1),
logarithm : this.result[i][k].includes("log"),
trigonometry : (this.result[i][k].includes("sin") || this.result[i][k].includes("cos") || this.result[i][k].includes("tan") || this.result[i][k].includes("cot"))
};
if(has.trigonometry){
specialFlag = true;
var trigSubgroupIndexes = [];
var trigTypes = [];
var trigsMultiplied = 1;
this.result[i][k] = this.result[i][k].replace(/(?:arc)?(sin|cos|tan|cot){_(\d+)}/g, function(match, type, index){
trigSubgroupIndexes.push(parseInt(index));
if(match.includes("arc")){
trigTypes.push([true, type]);
}else{
trigTypes.push([false, type]);
}
return " ";
});
for(var l = 0; l < trigTypes.length; l++){
var inverseness = trigTypes[l][0];
var type = trigTypes[l][1];
var parameter = (degreeOption) ? convertToRadian(parseFloat(this.result[trigSubgroupIndexes[l]])) : parseFloat(this.result[trigSubgroupIndexes[l]]);
var result;
if(inverseness){
switch(type){
case "sin":
result = Math.asin(parameter);
break;case "cos":
result = Math.acos(parameter);
break;case "tan":
result = Math.atan(parameter);
break;case "cot":
result = 1 / Math.atan(parameter);
break;
}
}else{
switch(type){
case "sin":
result = Math.sin(parameter);
break;case "cos":
result = Math.cos(parameter);
break;case "tan":
result = Math.tan(parameter);
break;case "cot":
result = 1 / Math.tan(parameter);
break;
}
}
trigsMultiplied *= result;
}
totalMultiplication *= trigsMultiplied;
}
if(has.logarithm){
specialFlag = true;
var logSubgroupIndexes = [];
var logsMultiplied = 1;
this.result[i][k] = this.result[i][k].replace(/log{_(\d+)}{_(\d+)}/g, function(match, firstIndex, secondIndex){
logSubgroupIndexes.push([parseInt(firstIndex), parseInt(secondIndex)]);
return " ";
});
for(var l = 0; l < logSubgroupIndexes.length; l++){
var base = this.result[logSubgroupIndexes[l][0]];
var power = this.result[logSubgroupIndexes[l][1]];
logsMultiplied *= (Math.log(power) / Math.log(base));
}
totalMultiplication *= logsMultiplied;
}
if(has.subgroup){
specialFlag = true;
var subgroupIndexes = [];
var groupsMultiplied = 1;
this.result[i][k] = this.result[i][k].replace(/{_(\d+)}/g, function(match, index){
subgroupIndexes.push(parseInt(index));
return " ";
});
for(var l = 0; l < subgroupIndexes.length; l++){
groupsMultiplied *= this.result[subgroupIndexes[l]];
}
totalMultiplication *= groupsMultiplied;
}
if(has.x){
specialFlag = true;
var powerX = countChar(this.result[i][k], "x");
this.result[i][k] = this.result[i][k].replace("x", " ");
totalMultiplication *= Math.pow(x, powerX);
}
if(specialFlag == true){
var factors = this.result[i][k].match(/\d+/g);
if(factors !== null){
for(var l = 0; l < factors.length; l++){
totalMultiplication *= parseFloat(factors[l]);
}
}
if(!isFinite(totalMultiplication) || checkNum(this.result[i][k]) || this.result[i][k].includes("(") || this.result[i][k].includes(")")){
this.result[i][k] = NaN;
}else{
this.result[i][k] = totalMultiplication;
}
}
}
var operators = ["^","*","/","+","-"];
for(var k = 0; k < operators.length; k++){
var search = this.result[i].indexOf(operators[k]);
while(search != -1){
switch(operators[k]){
case "+":
this.result[i].splice(search-1, 3, checkParse(this.result[i][search-1]) + checkParse(this.result[i][search+1]));
break;case "-":
this.result[i].splice(search-1, 3, checkParse(this.result[i][search-1]) - checkParse(this.result[i][search+1]));
break;case "*":
this.result[i].splice(search-1, 3, checkParse(this.result[i][search-1]) * checkParse(this.result[i][search+1]));
break;case "/":
this.result[i].splice(search-1, 3, checkParse(this.result[i][search-1]) / checkParse(this.result[i][search+1]));
break;case "^":
this.result[i].splice(search-1, 3, Math.pow(checkParse(this.result[i][search-1]) , checkParse(this.result[i][search+1])));
break;
}
if(this.result[i].indexOf(operators[k], search) == -1){
break;
}else{
search = this.result[i].indexOf(operators[k], search);
}
}
}
}
if(isNaN(this.result[0][0])){
this.result = "An error has occured, please make sure the parameters are correct.";
}else{
this.result = this.result[0][0];
}
}
functions.js
function countChar(str, character){
return str.toString().split(character).length-1;
}
function markChar(str, character){
var charCount = str.split(character).length;
var result = [];
for(var i = 0; i < charCount - 1; i++){
if(result.length == 0){
result.push(str.indexOf(character));
}else{
result.push(str.indexOf(character, result[i-1] + 1));
}
}
return result;
}
function changeAt(str, startingIndex, endingIndex, replacement){ // Returns the given string with the part between startingIndex and endingIndex replaced with replacement.
return str.substring(0, startingIndex) + replacement + str.substring(endingIndex, str.length);
}
function checkParse(str){
if(/[a-z]/.test(str) || countChar(str, ".") > 1){
return NaN;
}else{
return parseFloat(str);
}
}
function checkNum(str){
return (/[a-z]/.test(str) || countChar(str, ".") > 1);
}
function convertToRadian(degrees) {
return degrees * Math.PI / 180;
}
It works as intended when done like above. It puts values to x according to the range specified in the for loop in main.js and console.logs the results. But I don't want to create splittingOperators object everytime I recalculate with another x value. It's unnecessary since the actual formula stays the same.
var button1 = document.getElementById("button");
var text1 = document.getElementById("text");
var output = document.getElementById("result");
button1.addEventListener("click", function(){
var textInput = text1.value;
var cleared = new clearingUnwantedCharacters(textInput);
var marked = new subgroupMarking(cleared.output);
var prioritizedList = new subgroupPrioritization(marked.parenGroups);
var splittedPieces = new splittingOperators(prioritizedList.prioritizedGroups);
for(var i = 0; i <= 360; i++){
var calculatedPieces = new calculatePieces(splittedPieces.seperatedPieces, i, true);
console.log(calculatedPieces.result);
}
});
When I put the object creation outside of the for loop, it calculates and logs the first x value, but it gives
Uncaught TypeError: this.result[i][k].includes is not a function
as error after that. I suspect it's because it changes splittedPieces.seperatedPieces when it shouldn't. I couldn't find any reason for it to do that or maybe I am missing something.

Multidimentioanal arrays in JavaScript values not appending

I am trying to add values in a multidimensional array in JavaScript, but it doesn't seem to work. I get "variable not defined" error in snippet but can't see any variable which is not defined.
Does anyone have any idea what's going wrong here?
Many Thanks,
Hassam
var abc = "11:00, 11:10, 12:20,12:30";
var split = abc.split(",")
var limits = new Array();
var alltimes = [[],[]];
//var split = ["11:00", "11:10", "12:20","12:30"];
var x = 0;
for (var i = 0; i < split.length -1 ; i++) {
limits.push(split[i]);
// alert(split.length );
if(i%2 === 1) // If odd value
{
alert(limits);
for (var j = 0;j<2; j++)
{
// alert(limits[j]);
alltimes[x][j] = limits[j];
}
limits.length = 0;
x++;
}
// alert(split.length + 2);
//
}
alert(alltimes);
// console.log(abc)
This is my JavaScript code
$(document).ready(function(){
$('.timepicker').click(function(){
var ajaxurl = 'Ajax.php',
data = {'action': 'Hassam'};
$.post(ajaxurl, data, function (response) {
// $('#timepicker').timepicker('option', 'disableTimeRanges', [abc]);
var split = response.split(",");
var x = 0;
for (var i = 0; i < split.length -1 ; i++) {
limits.push(split[i]);
alert(split.length );
if(i%2 === 1) // If odd value
{
for (var j = 0;j<2; j++)
{
// alert(limits[j]);
alltimes[x][j] = limits[j];
}
limits.length = 0;
x++;
}
alert(split.length + 2);
//
}
alert(alltimes);
// console.log(abc)
});
There is very simple solution to achieve what you want.
var split = ["11:00", "11:10", "12:20", "12:30"];
var alltimes = [];
while (split.length) {
alltimes.push(split.splice(0, 2));
}
console.log(alltimes);

JS missing ) in parenthetical (line #88)

I'm writing a program in JS for checking equal angles in GeoGebra.
This is my first JS code, I used c# formerly for game programming.
The code is:
var names = ggbApplet.getAllObjectNames();
var lines = new Set();
var angles = new Set();
var groups = new Set();
for(var i=0; i<names.length; i++)
{
if(getObjectType(names[i].e)==="line")
{
lines.add(names[i]);
}
}
for(var i=0;i<lines.size;i++)
{
for(var j=0;j<i;j++)
{
var angle = new Angle(i,j);
angles.add(angle);
}
}
for(var i=0;i<angles.size;i++)
{
var thisVal = angles.get(i).value;
var placed = false;
for(var j=0;j<groups.size;j++)
{
if(groups.get(j).get(0).value===thisVal)
{
groups.get(j).add(angles.get(i));
placed = true;
}
}
if(!placed)
{
var newGroup = new Set();
newGroup.add(angles.get(i));
groups.add(newGroup);
}
}
for(var i=0;i<groups.size;i++)
{
var list="";
for(var j=0;j<groups.get(i).size;j++)
{
list = list+groups.get(i).get(j).name;
if(j != groups.get(i).size-1)
{
list = list+",";
}
}
var comm1 = "Checkbox[angle_{"+groups.get(i).get(0).value+"},{"+list+"}]";
ggbApplet.evalCommand(comm1);
var comm2 = "SetValue[angle_{"+groups.get(i).get(0).value+"}+,0]";
ggbApplet.evalCommand(comm2);
}
(function Angle (i, j)
{
this.lineA = lines.get(i);
this.lineB = lines.get(j);
this.name = "angleA_"+i+"B_"+j;
var comm3 = "angleA_"+i+"B_"+j+" = Angle["+this.lineA+","+this.lineB+"]";
ggbApplet.evalCommand(comm3);
var val = ggbApplet.getValue(this.name);
if(val>180)
{val = val-180}
this.value = val;
ggbApplet.setVisible(name,false)
});
function Set {
var elm;
this.elements=elm;
this.size=0;
}
Set.prototype.get = new function(index)
{
return this.elements[index];
}
Set.prototype.add = new function(object)
{
this.elements[this.size]=object;
this.size = this.size+1;
}
It turned out that GeoGebra does not recognize Sets so I tried to make a Set function.
Basically it collects all lines into a set, calculates the angles between them, groups them and makes checkboxes to trigger visuals.
the GeoGebra functions can be called via ggbApplet and the original Workspace commands via ggbApplet.evalCommand(String) and the Workspace commands I used are the basic Checkbox, SetValue and Angle commands.
The syntax for GeoGebra commands are:
Checkbox[ <Caption>, <List> ]
SetValue[ <Boolean|Checkbox>, <0|1> ]
Angle[ <Line>, <Line> ]
Thank you for your help!
In short, the syntax error you're running to is because of these lines of code:
function Set {
and after fixing this, new function(index) / new function(object) will also cause problems.
This isn't valid JS, you're likely looking for this:
function Set() {
this.elements = [];
this.size = 0;
}
Set.prototype.get = function(index) {
return this.elements[index];
};
Set.prototype.add = function(object) {
this.elements[this.size] = object;
this.size = this.size + 1;
};
Notice no new before each function as well.
I'm not sure what you're trying to accomplish by creating this Set object though - it looks like a wrapper for holding an array and its size, similar to how something might be implemented in C. In JavaScript, arrays can be mutated freely without worrying about memory.
Here's an untested refactor that removes the use of Set in favour of native JavaScript capabilities (mostly mutable arrays):
var names = ggbApplet.getAllObjectNames();
var lines = [];
var angles = [];
var groups = [];
for (var i = 0; i < names.length; i++) {
if (getObjectType(names[i].e) === "line") {
lines.push(names[i]);
}
}
for (var i = 0; i < lines.length; i++) {
for (var j = 0; j < i; j++) {
angles.push(new Angle(i, j));
}
}
for (var i = 0; i < angles.length; i++) {
var thisVal = angles[i].value;
var placed = false;
for (var j = 0; j < groups.length; j++) {
if (groups[j][0].value === thisVal) {
groups[j].push(angles[i]);
placed = true;
}
}
if (!placed) {
groups.push([angles[i]]);
}
}
for (var i = 0; i < groups.length; i++) {
var list = "";
for (var j = 0; j < groups[i].length; j++) {
list += groups[i][j].name;
if (j != groups[i].length - 1) {
list += ",";
}
}
var comm1 = "Checkbox[angle_{" + groups[i][0].value + "},{" + list + "}]";
ggbApplet.evalCommand(comm1);
var comm2 = "SetValue[angle_{" + groups[i][0].value + "}+,0]";
ggbApplet.evalCommand(comm2);
}
function Angle(i, j) {
this.name = "angleA_" + i + "B_" + j;
var comm3 = "angleA_" + i + "B_" + j + " = Angle[" + lines[i] + "," + lines[j] + "]";
ggbApplet.evalCommand(comm3);
var val = ggbApplet.getValue(this.name);
if (val > 180) {
val -= 180;
}
this.value = val;
ggbApplet.setVisible(name, false);
}
Hopefully this helps!
Your function definition is missing the parameter list after the function name.
Also, you're initializing the elements property to an undefined value. You need to initialize it to an empty array, so that the add method can set elements of it.
function Set() {
this.elements=[];
this.size=0;
}

Remove Characters from string

So i have this:
$('#chapters').filter(function() {
var volume_elms = $('.volume');
var chapter_elms = $('.chlist');
for (var i = 0, l = volume_elms.length; i < l; ++i) {
var elm = $(volume_elms[i]);
var celm = $(chapter_elms[i]);
var volume_name = elm.first().text();
var volume_id = elm.first().text().split('removeMe');
var vlist = {
id: volume_id,
name: volume_name,
chapters: []
};
for (var j = 0, ll = celm.children().length; j < ll; ++j) {
var chapter = $(celm.children()[j]);
var chapter_name = chapter.first().text().split('\r\n')[4].trim();
vlist.chapters.push({
name: chapter_name
});
}
json.volumes.push(vlist);
}
});
res.send(json);
And i want to remove some characters from volume_id and i know that .split('removeMe') removes that but it only removes it in that order and you can only use it once
So how can i remove multiple characters and also avoid it that it becomes an array (output is json)
You can use regex to find multiple matches, separated by '|' (or)
value.replace(/FilterMe|FilterMeToo/g, "");
You can replace multiple words Like
.filter('words', function() {
return function (value) {
return (!value) ? '' : value.replace('FilterMe', '').replace('FilterMeTwo', '').replace('FilterMeThree', '');
};
});

How to convert a nested array in javascript to json structure

In the following code i am trying to populate the javascript class,such that i get an object which i can stringify to json string.
function classValue(valuearrs) {
for (var i = 0; i < valuearrs.length; i++) {
for (j = 0; j < valuearrs[i].length; j++) {
this.id = valuearrs[i][j];
this.name = valuearrs[i][j];
this.somekey = valuearrs[i][j];
}
}
}
function CreatenestedarrObj( valuearr) {
this.Arrayparameters = [new classValue (valuearr)];
}
function ArrayMethodCall() {
var valuearr = new Array();
valuearr[0] = "myval1";
valuearr[1] = "myval2";
valuearr[2] = "myval3";
var valuearr1 = new Array();
valuearr1[0] = "myval11";
valuearr1[1] = "myval12";
valuearr1[2] = "myval13";
nestedarr = new Array();
nestedarr[0] = valuearr;
nestedarr[1] = valuearr1;
var x = new CreatenestedarrObj( nestedarr);
var strobject = JSON.stringify(x);
alert(strobject);
}
</script>
</head> <body> MethodCall: <input type="button" value="Call Method" onclick=" ArrayMethodCall ()" />
After Stringifying the value expected is {ArrayParameters:[{myval1,myval2,myval3},{myval1,myval12,myval13}]}.The thing i can think i am missing is creating new object each time in the loop but how ? or i might be totally wrong.Any help will be much appreciated.
try this
function classValue(valuearrs) {
var arr = []
for (var i = 0; i < valuearrs.length; i++) {
for (j = 0; j < valuearrs[i].length; j++) {
var temp = new Object();
temp.id = valuearrs[i][j];
temp.name = valuearrs[i][j];
temp.somekey = valuearrs[i][j];
arr[j] = temp;
}
}
return arr;
}
Change this:
function classValue(valuearrs) {
var arr=[]
for (var i = 0; i < valuearrs.length; i++) {
arr[i]={};
for (j = 0; j < valuearrs[i].length; j++) {
arr[i].id = valuearrs[i][j];
arr[i].name = valuearrs[i][j];
arr[i].somekey = valuearrs[i][j];
}
}
return arr;
}
i don't know why you need to split the nestedarr to id,name and somekey
but if you don't need to, just return the valuearrs and you will be fine:
function classValue(valuearrs) {
return valuearrs;
}
function CreatenestedarrObj( valuearr) {
this.Arrayparameters = [new classValue (valuearr)];
}
function ArrayMethodCall() {
var valuearr = new Array();
valuearr[0] = "myval1";
valuearr[1] = "myval2";
valuearr[2] = "myval3";
var valuearr1 = new Array();
valuearr1[0] = "myval11";
valuearr1[1] = "myval12";
valuearr1[2] = "myval13";
nestedarr = new Array();
nestedarr[0] = valuearr;
nestedarr[1] = valuearr1;
var x = new CreatenestedarrObj( nestedarr);
var strobject = JSON.stringify(x);
console.info(strobject);
}
the output is
{"Arrayparameters":[[["myval1","myval2","myval3"],["myval11","myval12","myval13"]]]}
or far better if you don't want it as Arrayparameters, you can use following code
var strobject = JSON.stringify(nestedarr);
and the output will be like this :
[["myval1","myval2","myval3"],["myval11","myval12","myval13"]]

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