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yap-6.3/packages/cplint/approx/params.pl
RIGUZZI FABRIZIO - Dipartimento di Ingegneria db2eefd0c9 added approximated cplint
2010-03-18 16:11:21 +01:00

123 lines
2.9 KiB
Prolog

/*==============================================================================
* LPAD and CP-Logic reasoning suite
* File: params.pl
* Defines and sets parameters needed by other predicates (main: set).
* Copyright (c) 2009, Stefano Bragaglia
*============================================================================*/
:- dynamic setting/2.
% :- source.
% :- yap_flag(single_var_warnings, on).
/* PARAMETER LIST
* --------------
* The following list of parameters declares a few constants used along the
* program.
* The default value for each parameter can be changed using the following
* predicate:
*
* set(Parameter, Value).
*/
/* epsilon_parsing
* ---------------
* This parameter shows the probability's granularity during parsing.
*
* Default value: 0.00001
* Applies to: parsing
*/
setting(epsilon_parsing, 0.00001).
/* ground_body
* -----------
* This parameter tells if both the head and the body of each clause must be
* ground, or else the head only.
* In case the body contains variables not present in the head, it represents
* an existential event.
*
* Default value: false
* Applies to: parsing
*/
setting(ground_body, false).
/* k
* -
* This parameter shows the amount of items of the same type to consider at once.
*
* Default value: 64
* Applies to: bestfirst, bestk, montecarlo
*/
setting(k, 64).
/* min_error
* ---------
* This parameter shows the threshold for the probability interval.
*
* Default value: 0.01
* Applies to: bestfirst, montecarlo
*/
setting(min_error, 0.01).
/* prob_bound
* ----------
* This parameter shows the initial probability bound in a probability bounded
* method.
*
* Default value: 0.01
* Applies to: deepit
*/
setting(prob_bound, 0.001).
/* prob_step
* ---------
* This parameter shows the probability deepening step in a probability bounded
* method.
*
* Default value: 0.001
* Applies to: bestfirst, bestk
*/
setting(prob_step, 0.001).
/* save_dot
* --------
* This parameter tells if a .dot file for variables has be created.
*
* Default value: false
* Applies to: bestfirst, bestk, exact
*/
setting(save_dot, false).
/* timeout
* -------
* This parameter shows the time to wait before killing a bdd solving process.
*
* Default value: 300
* Applies to: bestfirst, bestk, exact
*/
setting(timeout, 300).
/* PREDICATES
* ----------
* The predicates in this section interact with the parameters defined above.
*/
/* set(Parameter, Value)
* ---------------------
* This predicate drops any previously saved value for the given parameter and
* associates it to the new given value.
*
* INPUT
* - Parameter: target parameter for the given new value.
* - Value: new value to assign to the given parameter.
*/
set(Parameter, Value) :-
retract(setting(Parameter, _)),
assert(setting(Parameter, Value)).