DBMS with probabilistic model

1
DBMS with probabilistic model

• Probabilities and uncertainty taken seriously as
  foundation for the database model not an add-on
• old idea but never taken seriously
• e.g. Fuhrs Probabilistic Datalog
• Probabilistic retrieval model, probabilistic
  schema, uncertain queries, learning, appropriate
  data structures, etc.

2
IR queries for DBMS

• Not the same as NL queries work done in 80s
• Take a NL query, apply it to a DBMS, determine
  what type of answer can be provided
• may be fact-type answer (QA)
• may be ranked tuples (IR)
• Useful for distributed, heterogeneous search
• e.g. Hidden Web
• should not require wrappers