... bootstrapping method for PER NE, LOC NE, and ORG NE are 5%, 6%, and 34% respectively. The performance for PER and LOC are above 80%, approaching the performance of supervised learning. The reason for ... containsDigitAndAlpha, containsDigitAndDash, containsDigitAndSlash, containsDigitAndComma, containsDigitAndPeriod, otherNum, allCaps, capPeriod, initCap, lowerCase, other. 6 Benchmarking and Discussion ... (HMM) (Bikel 1997) and the Maximum Entropy Model (Borthwick 1998). The state-of-the-art rule-based systems and supervised learning systems can reach near-human performance for NE tagging in...