{'fraction_non_alphanumeric': 0.026687598116169546, 'fraction_numerical': 0.0, 'mean_word_length': 5.38, '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}}
A Sketch of Big Data Technologies

This paper outlines the recent developed information technologies in big data. The basic principles and theories, concepts and terminologies, methods and implementations, and the status of research and development in big data are depicted. The paper also highlights the technical challenges and major difficulties. The number of key technologies required to handle big data are deliberated. They include big data acquisition, pre/post-processing, data storage and distribution, networks, and analysis and mining, etc. At last, the development trend in big data technologies is addressed for discussion.