We present and evaluate a set of architectures for conversational dialogue systems, exploring rule-based and statistical classification approaches. In a case study, we show that while a rule-based dialogue policy is capable of high performance if perfect natural language understanding is assumed, a direct classification approach that combines the dialogue policy with NLU has practical advantages.

We present a practical and efficient approach to incorporating privacy policy enforcement into an existing application and database environment, and we explore some of the semantic tradeoffs introduced by enforcing these privacy policy rules at cell-level granularity. Through a comprehensive set of performance experiments, we show that the cost of privacy enforcement is small, and scalable to l...

The widening of roles and expectations within cultural policy discourses has been a challenge to museum workers throughout Great Britain (GB). There has been an expectation that museums are changing from an ‘old’ to a ‘new museology’ that has shaped museum functions and roles. This paper outlines the limitations of this perceived transition as museum services confront multiple exogenous and end...

This paper describes work in our project funded by DARPA Dynamic Coalitions program to design, develop, and demonstrate a system for automatically managing security policies in dynamic networks.. Specifically, we aim to reduce human involvement in network management by building a practical network reconfiguration system so that simple security policies stated as positive and negative invariants...

Background: There is limited understanding about the development of the online one-stop shops for evidence in a limited-resource setting, such as Uganda. This study aimed to provide a comprehensive account of the development process of the online resource for local policy and systems-relevant information in this setting. Methods: We utilized a case study design to address our objective where ...

as an assessment method of the water resources, water poverty index (wpi) has become an available tool in water resources management. in particular, agricultural water poverty index (awpi) is an assessment tool for agricultural water in rural areas. during the past decades, mahidasht basin in kermanshah province has been declared by water policy makers as “forbidden” basin in terms of water exp...

The paper focuses on regional trade agreements and economic co-operation and develops a new appropriate approach to study their impact on growth and trade. The approach is based on an endogenous trade-growth theory and novelly specified in an economic integration (expenditure) framework which is the conceptual foundation of regional trade agreements. Importantly, it also appropriately takes int...

Run-time monitors ensure that untrusted software and system behavior adheres to a security policy. This paper defines an expressive formal framework, based on I/O automata, for modeling systems, policies, and run-time monitors in more detail than is typical. We explicitly model, for example, the environment, applications, and the interaction between them and monitors. The fidelity afforded by t...

We present and evaluate a set of architectures for conversational dialogue systems, exploring rule-based and statistical classification approaches. In a case study, we show that while a rule-based dialogue policy is capable of high performance if perfect natural language understanding is assumed, a direct classification approach that combines the dialogue policy with NLU has practical advantages.

Drossopoulou and Noble [6] argue persuasively for the need for a means to express policy in object-capabilitybased systems. We investigate a practical means to realize their aim via the Curry-Howard isomorphism [1] [13]. Specifically, we investigate representing policy as types in a behavioral type system for the rho-calculus [15], a reflective higher-order variant of the π-calculus [18].