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License: MIT License
Library for reading and writing Weka attribute-relation file format (ARFF) files
License: MIT License
In my code i need to know how many instances there are in a file (before enumerating them) to size some multi dimensional arrays.
As the methods get a reader as parameter, there is no way to re-open the reader.
So I added following two methods, to reset the ArffReader's stream and to return the instances count.
/// <summary>
/// Reset StreamReader to beginning.
/// </summary>
public void Reset()
{
streamReader.BaseStream.Position = 0;
arffHeader = null;
}
/// <summary>
/// Returns the Instance Count.
/// </summary>
/// <returns></returns>
public Int64 Count()
{
Reset();
ReadHeader();
Int64 count = 0;
while (ReadInstance() != null)
{
count += 1;
}
return count;
}
Firstly, Thanks for creating this arff tool, it's awesome.
I am seeking a way to convert arff to csv format and I find out that on some large dataset it may costs a lot of time to load the entire dataset. For example, in the following dataset, it costs me about 1 hr when calling ReadAllInstances
. FYI, my machine is a surface book 2 i7 32GB laptop.
Is there any efficient way to make the loading speed much faster? Thanks
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