functionalize.js

// some test data
var data = [
        {value: '0.123', id:'1'},
        {value: '0.231', id:'2'},
        {value: '0.323', id:'3'},
        {value: '0.423', id:'4'},
    ]

    // creator of object Property lens
 , propLens = function(prop){
        return R.lens(
            //geter
            R.prop(prop),
            //seter
            function set(val, obj) {
                //clone object and set value on that
                var newObj = R.clone(obj);
                newObj[prop] = val
                return newObj;
            }
        )
    }

    //create lenses of properties we need
 , idLens = propLens('id')
 , valueLens = propLens('value')

   // map over data 
 , algorithm = R.map(
        R.compose(
            //map value with parseFloat
            valueLens.map(parseFloat),
            //map id with parseFloat
            idLens.map(parseFloat)
        )
    )

    //parse data 
 , parsedData = algorithm(data);

console.log(parsedData,data);

The propLens can be created like this:
var propLens = R.converge(R.lens, R.prop, R.assoc);