Article paru dans une Revue " La Revue des Sciences de Gestion", Année : 2019, le marché des actions de Beyrouth est-il efficient?, Sophie Nivoix, Mohammad El Hajj.
Dates et versions: hal-02555596 , version 1 (27-04-2020)
Identifiants: HAL Id : hal-02555596 , version 1
DOI : 10.3917/rsg.297.0067
We extend the description logic EL++ with reflexive roles
and range restrictions, and show that subsumption remains tractable if
a certain syntactic restriction is adopted. We also show that subsumption
becomes PSpace-hard (resp. undecidable) if this restriction is weakened
(resp. dropped). Additionally, we prove that tractability is lost when
symmetric roles are added: in this case, subsumption becomes ExpTime-
hard
When referencing an enum constant with an expression, you use a String literal. For example, consider this Enum class:
public enum Suit {hearts, spades, diamonds, clubs}
To refer to the Suit constant, Suit.hearts with an expression, you use the String literal, "hearts"
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Welcome to JUEL! JUEL is an implementation of the Unified Expression Language (EL), specified a part of the JSP 2.1 standard (JSR-245). Motivation Once, the EL started as part of JSTL. Then, the EL made its way into the JSP 2.0 standard. Now, though par