(disclaimer: I work on Duckling) I don't know of any benchmarks. HeidelTime and SUTime are two solid projects... although the rule files [0][1] are a bit scary

(disclaimer: I work on Duckling) I don't know of any benchmarks. HeidelTime and SUTime are two solid projects... although the rule files [0][1] are a bit scary if you ask me :-). Quick thoughts: - SUTime relies on TokensRegex [2] which is similar to how Duckling parses sentences at a high-level - SUTime seems to only provide English rules - I don't know of any production use cases of either [0] https://github.com/stanfordnlp/CoreNLP/tree/master/src/edu/stanford/nlp/time https://github.com/stanfordnlp/CoreNLP/tree/master/src/edu/s... [1] https://github.com/HeidelTime/heideltime/blob/master/resources/english/rules/resources_rules_daterules.txt https://github.com/HeidelTime/heideltime/blob/master/resourc... [2] https://nlp.stanford.edu/pubs/tokensregex-tr-2014.pdf https://nlp.stanford.edu/pubs/tokensregex-tr-2014.pdf