public bool CheckError()
{
var _inputs = _codebook.GetArray(_treeInfo.Inputs);
var _outputs = _codebook.GetArray(_treeInfo.Output);
if (_inputs == null || _outputs == null)
{
return(false);
}
var result = true;
for (var i = 0; i < _inputs.Length; ++i)
{
var res = _tree.Compute(_inputs[i]);
result = result && res == _outputs[i];
if (result)
{
continue;
}
var vector = string.Join(", ", _inputs[i].Select(x => x.ToString()));
_logger.Info($"Crash for: {vector}");
}
return(result);
}
public DecisionTreeService(
DataTable data,
IDictionary <string, string[]> metaInfo,
ILogger logger)
{
_logger = logger;
_codebook = new Codebook(data, metaInfo);
var vars = ParseMetaInfo(metaInfo);
var inputInfo = vars.Take(vars.Length - 1).ToArray();
var outputInfo = vars.Last();
_treeInfo = new TreeInfo()
{
Inputs = inputInfo.Select(x => x.Name).ToArray(),
Output = outputInfo.Name
};
var inputs = _codebook.GetArray(_treeInfo.Inputs);
var outputs = _codebook.GetArray(_treeInfo.Output);
_treeBuilder = new Id3Algorithm(inputInfo, outputInfo);
_tree = _treeBuilder.Learn(inputs, outputs);
}