We present a model for semantic role labeling that effectively captures the linguistic intuition that a semantic argument frame is a joint structure, with strong dependencies among the arguments. We show how to incorporate these strong dependencies in a statistical joint model with a rich set of features over multiple argument phrases. The proposed model substantially outperforms a similar stat...

Role-based access control (RBAC) is a commercially dominant model, standardized by the National Institute of Standards and Technology (NIST). Although RBAC provides compelling benefits for security management it has several known deficiencies such as role explosion, wherein multiple closely related roles are required (e.g., attendingdoctor role is separately defined for each patient). Numerous ...

Li Yang and Jiankang Wu have designed a semantic image database system (OISDBS) for structural management of image data. They describe a semantic image data model and propose a diagrammatic query language with a Query-by-example (QBE) in order to manipulate the pictorial database directly. They also describe an implementation of OISDBS build on ISDBS, a relational image database system. In this...

While some information modeling approaches (e.g. the Relational Model, and Object-Role Modeling) are typically formalized using first-order logic, other approaches to information modeling include support for higher-order types. There appear to be three main reasons for requiring higher-order types: (1) to permit instances of categorization types to be types themselves (e.g. the Unified Modeling...

Traditionally database design has been taught using Entity Relationship (ER) modelling. In this paper we set out some of the problems that learners experience with the ER approach. We argue that Object Role Modelling (ORM), a design method taught at the University of Wolverhampton helps overcome these problems.

We present a semantic role labeling system submitted to the closed track of the CoNLL-2005 shared task. The system, introduced in (Toutanova et al., 2005), implements a joint model that captures dependencies among arguments of a predicate using log-linear models in a discriminative re-ranking framework. We also describe experiments aimed at increasing the robustness of the system in the presenc...

This article is the second in a series of articles dealing with Entity Relationship (ER) modeling from the perspective of Object Role Modeling (ORM). Part 1 provided a brief overview of the ER approach, and then covered the basics of the Barker ER notation [1], that has long been supported in CASE tools from vendors such as Oracle Corporation. In this notation, entity types are depicted as name...