{'fraction_non_alphanumeric': 0.021145374449339206, 'fraction_numerical': 0.012334801762114538, 'mean_word_length': 5.566473988439307, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
MIREX Grand Challenge 2014 User Experience: Qualitative Analysis of User Feedback

Evaluation has always been fundamental to the Music Information Retrieval (MIR) community, as evidenced by the popularity of the Music Information Retrieval Evaluation eXchange (MIREX). However, prior MIREX tasks have primarily focused on testing specialized MIR algorithms that sit on the back end of systems. Not until the Grand Challenge 2014 User Experience (GC14UX) task had the users’ overall interaction and experience with complete systems been formally evaluated. Three systems were evaluated based on five criteria. This paper reports the results of GC14UX, with a special focus on the qualitative analysis of 99 free text responses collected from evaluators. The analysis revealed additional user opinions, not fully captured by score ratings on the given criteria, and demonstrated the challenge of evaluating a variety of systems with different user goals. We conclude with a discussion on the implications of findings and recommendations for future UX evaluation tasks, including adding new criteria: Aesthetics, Performance, and Utility.