{'fraction_non_alphanumeric': 0.02199223803363519, 'fraction_numerical': 0.0129366106080207, 'mean_word_length': 5.344262295081967, '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}}
Persistent Archives for Data Collections

Persistent archives are feasible when examined from the perspective of data collections [1,2]. Issues of ingestion, identification, and certification can then be cast in terms of the information models and technologies needed to manage and federate collections [14, 17, 18]. It is interesting to note that the data and information models needed to federate multiple collections in space are the same models needed to ensure the ability to migrate collections forward in time. Thus we propose building persistent archives upon architectures that are compatible with the digital library and data grid communities [16]. In this paper we look at the implications of archiving collections, as opposed to archiving digital objects alone.