Logic

Type Members

final case class Atoms(inHead: Set[Atom], inFormula: Set[Atom]) extends Product with Serializable

Represents the set of atoms in the heads of clauses and in the bodies (formulas) of clauses.
final class CyclicNegation extends LogicException
final class InitialContradictions extends LogicException
final class InitialOverlap extends LogicException
sealed abstract class LogicException extends AnyRef
final class Matched extends AnyRef

Tracks proven atoms in the reverse order they were proved.

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
object Matched
def applyAll(c: Clause, facts: Set[Literal]): Option[Clause]
def applyAll(cs: Clauses, facts: Set[Literal]): Option[Clauses]

Applies known facts to clauses, deriving a new, possibly empty list of clauses.
Applies known facts to clauses, deriving a new, possibly empty list of clauses. 1. If a fact is in the body of a clause, the derived clause has that fact removed from the body. 2. If the negation of a fact is in a body of a clause, that clause fails and is removed. 3. If a fact or its negation is in the head of a clause, the derived clause has that fact (or its negation) removed from the head. 4. If a head is empty, the clause proves nothing and is removed.
NOTE: empty bodies do not cause a clause to succeed yet. All known facts must be applied before this can be done in order to avoid inconsistencies. Precondition: no contradictions in facts Postcondition: no atom in facts is present in the result Postcondition: No clauses have an empty head
final def asInstanceOf[T0]: T0

Definition Classes
Any
def atoms(formula: Formula): Set[Atom]

Computes the set of all atoms in formula.
def atoms(cs: Clauses): Atoms

Computes the atoms in the heads and bodies of the clauses in clause.
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hasNegatedDependency(clauses: Seq[Clause], posDeps: Relation[Atom, Atom], negDeps: Relation[Atom, Atom]): List[Atom]

Computes the set of atoms in clauses that directly or transitively take a negated atom as input.
Computes the set of atoms in clauses that directly or transitively take a negated atom as input. For example, for the following clauses, this method would return List(a, d) : a :- b, not c d :- a

Annotations
@tailrec()
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def reduce(clauses: Clauses, initialFacts: Set[Literal]): Either[LogicException, Matched]

Computes the variables in the unique stable model for the program represented by clauses and initialFacts.
Computes the variables in the unique stable model for the program represented by clauses and initialFacts. clause may not have any negative feedback (that is, negation is acyclic) and initialFacts cannot be in the head of any clauses in clause. These restrictions ensure that the logic program has a unique minimal model.
def reduceAll(clauses: List[Clause], initialFacts: Set[Literal]): Either[LogicException, Matched]
def substitute(formula: Formula, facts: Set[Literal]): Option[Formula]

Derives the formula that results from substituting facts into formula.
Derives the formula that results from substituting facts into formula.

Annotations
@tailrec()
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Doc: package logic

object Logic

Type Members

final case class Atoms(inHead: Set[Atom], inFormula: Set[Atom]) extends Product with Serializable

final class CyclicNegation extends LogicException

final class InitialContradictions extends LogicException

final class InitialOverlap extends LogicException

sealed abstract class LogicException extends AnyRef

final class Matched extends AnyRef

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

object Matched

def applyAll(c: Clause, facts: Set[Literal]): Option[Clause]

def applyAll(cs: Clauses, facts: Set[Literal]): Option[Clauses]

final def asInstanceOf[T0]: T0

def atoms(formula: Formula): Set[Atom]

def atoms(cs: Clauses): Atoms

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hasNegatedDependency(clauses: Seq[Clause], posDeps: Relation[Atom, Atom], negDeps: Relation[Atom, Atom]): List[Atom]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def reduce(clauses: Clauses, initialFacts: Set[Literal]): Either[LogicException, Matched]

def reduceAll(clauses: List[Clause], initialFacts: Set[Literal]): Either[LogicException, Matched]

def substitute(formula: Formula, facts: Set[Literal]): Option[Formula]

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped