Rows HZP rules and HZP log-linear refer to the rule-based baseline and the best log-linear model of<cite> (Huang et al., 2001</cite> ) and the figures are simply taken from that paper; row Col log-linear refers to the same named entity tagger we used in the previous section and is included for comparison with the HZP models; row JA digits refers to the simple baseline where we extract strings of spoken digits of plausible lengths.