Node.js cosine similarity between array and object array

Question

How can I find the similarity using node.js between an array vector x with 4 elements and an array of objects y?

var similarity = require( 'compute-cosine-similarity' );

var y= [ {'1': [30,12,0,3]},
         {'2':[30,12,0,6]},
         {'3':[30,12,0,1000]} ];

var x =[2,2,2,2];

s=similarity(x, y);

console.log(s);

for example the first iteration should find the similarity between

x = [2,2,2,2]

and

{'1': [30,12,0,3]}

and so on..

Answer 1

you can run this code :

var similarity = require( 'compute-cosine-similarity' );

var y= [ {'1': [30,12,0,3]},
  {'2':[30,12,0,6]},
  {'3':[30,12,0,1000]} ];

var x =[2,2,2,2];
var result=[];
for(var i=0;i<y.length;i++){
  for (var key in y[i]) {
    if (y[i].hasOwnProperty(key)) {

      result.push(similarity(x, y[i][key]))
    }
  }
}
console.log(result);// will print the similarity as an array [ 0.6933752452815364, 0.7302967433402213, 0.5207282507611518 ]

if you need an other output leave a comment thanks !