using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HeuristicLab.Problems.GrammaticalOptimization {
  // for the feature extraction function for grammatical optimization problems (sparse representation)
  public class Feature {
    public string Id { get; private set; }
    public double Value { get; private set; }

    public Feature(string id, double val) {
      this.Id = id;
      this.Value = val;
    }

    public override string ToString() {
      return string.Format("{0} {1:N3}", Id, Value);
    }
  }
}