... results and Ta-ble 3 shows the final NER F1 results. We compareto the state-of-the-art methods of Ando and Zhang(2005), Suzuki and Isozaki (2008), and for NER—Lin and Wu (2009). Tables 2 and 3 showthat ... Zhang and Johnson (2003):• Previous two predictions yi−1 and yi−2• Current word xi• xiword type information: all-capitalized,is-capitalized, all-digits, alphanumeric, etc.• Prefixes and ... and numbers. For example, 1980 becomes*DDDD* and 21 2-3 2 5-4 751 becomes *DDD *- *DDD *-* DDDD*. This allows a degree of abstrac-tion to years, phone numbers, etc. This delexi-calization is performed...