{'fraction_non_alphanumeric': 0.020869565217391306, 'fraction_numerical': 0.0, 'mean_word_length': 5.127659574468085, '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}}
Reusable learning objects: a survey of LOM-based repositories

In this paper, we survey the field of learning object repositories. Learning objects are typically relatively small content components that are meant to be reusable in different contexts. Associated to these learning objects are metadata, so that they can be managed, searched, etc. As the international standardization in this area is making important progress, the number of these repositories is growing rapidly, and the whole field of learning objects is rapidly maturing as a research area in its own right.