منابع مشابه
Is Scheduling a Solved Problem?
In recent years, scheduling research has had an increasing impact on practical problems, and a range of scheduling techniques have made their way into realworld application development. Constraint-based models now couple rich representational flexibility with highly scalable constraint management and search procedures. Similarly, mathematical programming tools are now capable of addressing prob...
متن کاملWeb Services Security: is the problem solved?
During the past years significant standardization work in web services technology has been made. As a consequence of these initial efforts, web services foundational stable specifications have already been delivered. Now, it is time for the industry to standardize and address the security issues that have risen from this paradigm. Great activity is being carried out on this subject. This articl...
متن کاملThe H ∞ control problem is solved
The H∞ control problem was posed by G. Zames in 1981 [1], and solved by P. Apkarian and D. Noll in 2006 [2]. In this treatise we present the rational of H∞ control, give a short history, and recall the milestones reached before our 2006 solution. We also discuss the recent Matlab function hinfstruct, based on work by Apkarian, Noll and Gahinet (TheMathworks) and available in the Robust Control ...
متن کاملForward problem of electrocardiography: is it solved?
BACKGROUND The relationship between epicardial and body surface potentials defines the forward problem of electrocardiography. A robust formulation of the forward problem is instrumental to solving the inverse problem, in which epicardial potentials are computed from known body surface potentials. Here, the accuracy of different forward models has been evaluated experimentally. METHODS AND RE...
متن کاملEntity Extraction is a Boring Solved Problem - Or is it?
This paper presents empirical results that contradict the prevailing opinion that entity extraction is a boring solved problem. In particular, we consider data sets that resemble familiar MUC/ACE data, and report surprisingly poor performance for both commercial and research systems. We then give an error analysis that suggests research challenges for entity extraction that are neither boring n...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1984
ISSN: 0028-0836,1476-4687
DOI: 10.1038/309117b0