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Code Issues 15 Releases 21 Activity
287 Commits 2 Branches 21 Tags
8c250f5c598a0aa85387bd83da94b8fc8302653d
Commit Graph
66 Commits
Author SHA1 Message Date
patrick 8c250f5c59 Support modulus operation (absolute value) 
This adds support for computing the absolute value of a term along with
an according unit test.
 2018-04-12 00:38:48 +02:00
patrick 797660d6de Add new simplification rule 
This adds the rule “(not F [comparison] G) === (F [negated comparison]
G)” to the simplification rule tableau.
 2018-04-11 21:39:27 +02:00
patrick 40ddee8444 Add new simplification rule 
This adds the rule “(not F or G) === (F -> G)” to the simplification
rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 6f7b021712 Add new simplification rule 
This adds the rule “(not (F and G)) === (not F or not G)” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 23624007ec Add new simplification rule 
This adds the rule “not not F === F” to the simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick 6d7b91c391 Add new simplification rule 
This adds the rule “(F <-> (F and G)) === (F -> G)” to the
simplification rule tableau.
 2018-04-10 22:34:47 +02:00
patrick eaabeb0c55 Support exponentiation operator 
Because of a bug in the Clingo API, the exponentation operator was not
properly exposed to anthem. This updates Clingo to a version with a
fixed API and adds proper support for exponentation within anthem along
with a matching unit test.
 2018-04-10 22:29:55 +02:00
patrick c294a29cb2 Support placeholders with #external declarations 
This adds support for declaring predicates as placeholders through the
“#external” directive in the input language of clingo.

Placeholders are not subject to completion. This prevents predicates
that represent instance-specific facts from being assumed as universally
false by default negation when translating an encoding.

This stretches clingo’s usual syntax a bit to make the implementation
lightweight. In order to declare a predicate with a specific arity as a
placeholder, the following statement needs to be added to the program:

    #external <predicate name>(<arity>).

Multiple unit tests cover cases where placeholders are used or not as
well as a more complex graph coloring example.
 2018-04-08 20:28:57 +02:00
patrick 5f8c144628 Fixed regression in simplifying predicates with more than one argument. 2017-06-12 18:27:39 +02:00
patrick 1f1006ea96 Corrected hiding predicates that are simple propositions. 2017-06-12 15:40:02 +02:00
patrick 7665cb7bf1 Added unit test for the completion of predicates with nested arguments. 2017-06-12 15:32:05 +02:00
patrick a4cd133ba7 Correctly implemented hiding predicates with nested arguments. 2017-06-12 02:25:04 +02:00
patrick 649489a1eb Renamed unit test for clarity. 2017-06-09 22:10:43 +02:00
patrick cbe87d8cb7 Fixed issue with simplifying binary operations in arguments. 2017-06-09 22:00:00 +02:00
patrick 0285c1cbbb Renamed internal variables for clarity. 2017-06-06 01:44:44 +02:00
patrick 19ede968ed Added unit test that predicate arity is respected by #show statements. 2017-06-05 04:00:09 +02:00
patrick 7ae0a1f289 Removed unnecessary parentheses after simplification. 2017-06-05 03:58:39 +02:00
patrick b272a91888 Extended unit test for circular dependencies and #show. 2017-06-05 03:40:41 +02:00
patrick b91e55dfc4 Added unit test for recognizing Booleans when hiding statements. 2017-06-05 03:39:10 +02:00
patrick 7904b41e60 Added unit test covering circular dependencies with #show statements. 2017-06-05 03:34:13 +02:00
patrick adabe1bf1a Added simple unit tests for #show statements. 2017-06-05 03:26:09 +02:00
patrick dcc504ebc0 Added another simplification step after completion. 2017-06-04 20:55:24 +02:00
patrick 0930e062c4 Enforcing color output when testing for convenience. 2017-06-01 03:08:05 +02:00
patrick 4baed6fbc6 Added back completion support. 2017-06-01 02:37:45 +02:00
patrick 0d8b1e94da Refactored error handling. 2017-05-31 18:03:19 +02:00
patrick 664a57ec68 Fixed issue with multi-layer variable stacks. 2017-05-30 18:09:33 +02:00
patrick 1917f18b6a Added back simplification support. 2017-05-30 04:06:56 +02:00
patrick 1c925d661b Major refactoring to uniquely link variables to their declarations (breaks simplification and completion). 2017-05-30 03:56:35 +02:00
patrick 48271cea88 Removed obsolete to-do. 2017-05-05 13:51:07 +02:00
patrick d056fabb8b Fixes lost signs with negated 0-ary predicates. 2017-05-04 15:44:37 +02:00
patrick 5948d30e5c Refactored implementation of completion. 2017-04-10 16:32:12 +02:00
patrick d4ce0d54e8 Fixed typo. 2017-04-10 14:30:35 +02:00
patrick b0388b9b28 Added example from the completion paper as unit test. 2017-04-08 20:22:50 +02:00
patrick 37526bcc8e Fixed incorrect handling of implications with Booleans. 2017-04-08 20:17:01 +02:00
patrick 2ef3ef24a1 Fixed typos in unit test case. 2017-04-08 20:02:20 +02:00
patrick 2ae5cfbfa6 Enforcing unit tests not to throw exceptions. 2017-04-08 19:59:59 +02:00
patrick a1648e27c9 Added tests covering completion of integrity constraints and facts. 2017-04-08 18:50:42 +02:00
patrick 350f31d0fd Added simple unit tests for completion. 2017-04-08 18:47:06 +02:00
patrick ac7a0f6d4c Fixed typo. 2017-04-08 18:42:36 +02:00
patrick 8ddf068eeb Removed unnecessary include directive. 2017-04-08 18:38:37 +02:00
patrick f28873617d Implemented translation of anonymous variables. 2017-03-29 21:28:46 +02:00
patrick c8cd6fec48 Added test case for incorrectly simplified rules with comparison. 2017-03-28 17:10:38 +02:00
patrick 32e6301b5e Added some unit tests for the simplification procedure. 2017-03-23 15:14:32 +01:00
patrick 09c2674148 Fixed incorrectly translated choice rules with multiple elements in the aggregate. 2017-03-23 02:06:19 +01:00
patrick 73f67f5c17 Added back support for function symbols. 2017-03-15 17:01:09 +01:00
patrick 9e6d135781 Implemented explicit syntax tree representation for first-order formulas. 2017-03-15 16:00:43 +01:00
patrick c294aa1337 Added test covering choice rules with bodies. 2017-03-06 15:55:00 +01:00
patrick 2a0b7ef3b5 Added tests covering simple choice rules. 2017-03-06 15:49:40 +01:00
patrick a653556d77 Resolved minor warnings. 2016-11-29 02:29:54 +01:00
patrick f11097180a Extended unit tests related to facts and integrity constraints. 2016-11-24 17:45:22 +01:00