A Computational Treatment of HPSGLexical Rules as Covariation in

A Computational Treatment of Lexical Rules in HPSG as Covariation in Lexical Entries

This paper proposes a new computational treatment of lexical rules as used in the HPSG framework. A compiler is described which translates a set of lexical rules and their interaction into a definite clause encoding, which is called by the base lexical entries in the lexicon. This way, the disjunctive possibilities arising from lexical rule application are encoded as systematic covariation in t...

A Computational Treatment of HPSG Lexical Rules as Covariation in Lexical Entries

We describe a compiler which translates a set of hpsg lexical rules and their interaction into deenite relations used to constrain lexical entries. The compiler ensures automatic transfer of properties unchanged by a lexical rule. Thus an operational semantics for the full lexical rule mechanism as used in HPSG linguistics is provided. Program transformation techniques are used to advance the r...

Reducing Retrieval Time in Automated Storage and Retrieval System with a Gravitational Conveyor Based on Multi-Agent Systems

The main objective of this study is to reduce the retrieval time of a list of products by choosing the best combination of storage and retrieval rules at any time. This is why we start by implementing some storage rules in an Automated Storage/Retrieval System (Automated Storage and Retrieval System: AS/RS) fitted with a gravity conveyor while some of these rules are dedicated to storage and ot...

Computational Protein Design Quantifies Structural Constraints on Amino Acid Covariation

Amino acid covariation, where the identities of amino acids at different sequence positions are correlated, is a hallmark of naturally occurring proteins. This covariation can arise from multiple factors, including selective pressures for maintaining protein structure, requirements imposed by a specific function, or from phylogenetic sampling bias. Here we employed flexible backbone computation...

Variation and covariation in segregating wheat populations grown under rainfed and irrigated conditions in semi-arid region of the middle east