From a systemto-system perspective, wikification has demonstrated its usefulness in a variety of applications, including coreference resolution (Ratinov and Roth, 2012) and classification (Vitale et al., 2012).
we first segment @usernames and #hashtags into regular tokens (e.g., @amandapalmer is segmented as amanda palmer and #worldwater-Day is split as world water Day) using the approach proposed by (wang et al., 2011).