SUBSCRIPTIONS CONTINUED.*
نویسندگان
چکیده
منابع مشابه
Spatial Subscriptions in Distributed Event- Based Systems
One of the common approaches to specify locations is by indicating their spatial relationships to other, more well-known, locations. This chapter aims at analyzing the feasibility of expressing this kind of spatial relations in subscriptions of Distributed Event-based Systems (DEBSs). On one hand, the spatial relation expressions consist of various location-level abstractions, which have to be ...
متن کاملScalable XML Filtering for Content Subscriptions
Over the past few years, there have been an increasing number of Web applications that exchange various types of data on the Internet. In this article, we propose a technique for building efficient and scalable XML publish/subscribe applications. In particular, we look at the problem of processing streaming XML data efficiently against a large number of branch XPath queries. To improve the perf...
متن کاملEighteenth century medics (subscriptions, licences, apprenticeships)
but the authors seem unfortunately to have been given no opportunity to amend or reconsider them. Regrettable also in such a diverse collection is the absence ofan index. The papers are very variable in quality, too often over-long, and with frequently excellent data employed in largely descriptive presentations confined to single localities, lacking context or even an attempt to assess wider i...
متن کاملManaging Distributed Systems with Smart Subscriptions
We describe an event-based, publishand-subscribe system based on using “smart subscriptions” to recognize weakly structured events. We present a hierarchy of subscription languages (propositional, predicate, temporal and agent) of increasing expressability and computational complexity, and several algorithms (Sig, Memo, Lattice, Compile and RETE) for efficiently recognizing event matches. We ha...
متن کاملPruning subscriptions in distributed publish/subscribe systems
Publish/subscribe systems utilize filter algorithms to determine all subscriptions matching incoming event messages. To distribute such services, subscriptions are forwarded to several filter components. This approach allows for an application of routing algorithms that selectively forward event messages to only a subset of filter components. Beneficial effects of this scheme include decreasing...
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: The Lancet
سال: 1827
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(02)81146-1