added approximated cplint

packages/cplint/approx/.svn/text-base/params.pl.svn-base

@@ -0,0 +1,122 @@
+/*==============================================================================
+ *	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)).