Parse the input string as an SparseInstance class, in LibSVM comma-separated format, where each feature is of the form "i:v" where i is the index of the feature (starting at 1), and v is the value of the feature.
Parse the input string as an SparseInstance class, in LibSVM comma-separated format, where each feature is of the form "i:v" where i is the index of the feature (starting at 1), and v is the value of the feature.
the String line to be read, in LibSVM format
a DenseInstance which is parsed from input