Posted By

mizunoandrey on 01/25/15

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Last Edited at 01/25/15 05:18am

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choose criterion 2011

/ Published in: C#

older version of and id3/c45 classifier

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protected int GetNextCriterion(Table table)
        {
            Dictionary<_NodeCriterionInfo, int> filter = GetFilter();
            Table rest = table.Filter(filter);

List<double> infos = new List<double>();

int i;

for (i = 0; i < rest.Criteria.Count - 1; i++)
                infos.Add(rest.Infos(i));

for (i = 0; i < rest.Criteria.Count - 1; i++)
            {
                bool containsKey = false;
                foreach (KeyValuePair<_NodeCriterionInfo,int> kvp in filter)
                    if (kvp.Key.Index == i)
                    {
                        containsKey = true;
                        break;
                    }
                if (
                    !containsKey
                    ) break;
            }

int iMin = i;
            double min = infos[iMin];

for (i = iMin; i < rest.Criteria.Count - 1; i++)
            {
                bool containsKey = false;
                foreach (KeyValuePair<_NodeCriterionInfo, int> kvp in filter)
                    if (kvp.Key.Index == i)
                    {
                        containsKey = true;
                        break;
                    }
                if (
                    containsKey
                    ) continue;

if (infos[i] < min)
                {
                    min = infos[i];
                    iMin = i;
                }
            }

return iMin;
        }

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