1 /*
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2006 Daniel Le Berre
3 *
4 * Based on the original minisat specification from:
5 *
6 * An extensible SAT solver. Niklas E?n and Niklas S?rensson. Proceedings of the
7 * Sixth International Conference on Theory and Applications of Satisfiability
8 * Testing, LNCS 2919, pp 502-518, 2003.
9 *
10 * This library is free software; you can redistribute it and/or modify it under
11 * the terms of the GNU Lesser General Public License as published by the Free
12 * Software Foundation; either version 2.1 of the License, or (at your option)
13 * any later version.
14 *
15 * This library is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
18 * details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this library; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26 package org.sat4j.minisat.core;
27
28 import java.io.Serializable;
29
30 /**
31 * Implementation of the strategy design pattern for allowing various learning
32 * schemes.
33 *
34 * @author leberre
35 */
36 public interface LearningStrategy<L extends ILits> extends Serializable {
37
38 /**
39 * hook method called just before the search begins. Useful to compute
40 * metrics/parameters based on the input formula.
41 *
42 */
43 void init();
44
45 void learns(Constr constr);
46
47 void setVarActivityListener(VarActivityListener s);
48
49 void setSolver(Solver<L> s);
50 }