matching algorithm parameters

the parameters required by a record linkage algorithm, cf. RLG Chapter 1, §5; the set of parameters is called a MAP; the list of parameters are: blocking scheme, cf. RLG Chapter 3, comparison weights, cf. RLG Chapter 4, §1, weighting scheme, cf. RLG Chapter 4, §2, weighting thresholds, cf. RLG Chapter 4, §3