August 17, 2005
Generic Soft Pattern Models for Definitional QA
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Soft Matching (Cui et al., 2004)
•…… The channel Iqra is owned by the …
   …… severance packages, known as golden parachutes, included ……
   A battery is a cell which can provide electricity.
•          DT$   NN  <Search_Term>   BE$ owned  by
•        known  as   <Search_Term>     ,     VB
•           <Search_Term>   BE$  DT$
…… <Slot-2>       <Slot-1>   <Search_Term>    <Slot1>      <Slot2> ……
         NN 0.12       NN  0.11             ,  0.40         DT$ 0.2
      known 0.09     as 0.20                          BE$ 0.2      VB 0.1  
        DT$ 0.04                 owned 0.09
Training
Testing
   known            as         <Search_Term>        ,               DT$ 
 … is known as Wicca, a neo-pagan nature religion, includes the use of herbal magic and witchcraft in its practice.     
 P ( Ins ) = P(“known”|S-2) + P(“as”|S-1) + P(“,”|S1) + P(“DT$”|S2)
  + P(“known as”) + P(“, DT$”)