def metta_config(quarter, num_dimensions):
first_day, last_day = quarter_boundaries(quarter)<EOL>return {<EOL>'<STR_LIT>': first_day,<EOL>'<STR_LIT>': last_day,<EOL>'<STR_LIT>': <NUM_LIT:3>, <EOL>'<STR_LIT>': '<STR_LIT>',<EOL>'<STR_LIT>': '<STR_LIT>',<EOL>'<STR_LIT>': '<STR_LIT>'.format(quarter),<EOL>'<STR_LIT>': ['<STR_LIT>'.format(i) for i in range(num_dimensions)],<EOL>}<EOL>
Returns metta metadata for a quarter's SOC code classifier matrix

    Args:
        quarter (str) quarter, in format '2015Q1'
        num_dimensions (int) Number of features in matrix

    Returns: (dict) metadata suitable for metta.archive_train_test