... Here is an example of a tweet: “my-craftingworld: #Win Microsoft Of ce 2010 Homeand Student #Contest from @of ce http://bit.ly/ ···”, where “mycraftingworld” is the name of the userwho published ... IntroductionTweets, short messages of less than 140 charactersshared through the Twitter service1, have becomean important source of fresh information. As a re-sult, the task of named entity recognition ... syntacticfeatures, such as part -of- speech (POS) and shallow parsing; Downey et al. (2007) employ capitaliza-tion cues and n-gram statistics to locate names of avariety of classes in web text; Wang...