{'fraction_non_alphanumeric': 0.014184397163120567, 'fraction_numerical': 0.0017730496453900709, 'mean_word_length': 4.947368421052632, '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 Least Mean Squares Cubic Algorithm for On-Line Differential of Sampled Analog Signals

A digital computer algorithm is developed for on-line time differentiation of sampled analog voltage signals. The derivative is obtained by employing a least mean squares technique. The recursive algorithm results in a considerable reduction in computer time compared to a complete new solution of the normal equations each time a new data point is accepted. Implementations of the algorithm on a digital computer is discussed. Examples are simulated on a DEC PDP-8 computer.