Probabilistic object bases

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Temporal Probabilistic Object Bases

There are numerous applications where we have to deal with temporal uncertainty associated with objects. For example, financial prediction programs often use complex object models and are parameterized by time and uncertainty (e.g., when will a given loan default?). Likewise, in transportation logistics, object models are used to describe objects involved in the transportation process (e.g., ve...

متن کامل

Abteilung Wissensbasierte Systeme Probabilistic Object Bases

Though there are many applications where an object oriented data model is a good way of representing and querying data, current object database systems are unable to handle objects whose attributes are uncertain. In this paper, we extend previous pioneering work by Kornatzky and Shimony to develop an algebra to handle object bases with uncertainty. We propose concepts of consistency for such ob...

متن کامل

Towards Probabilistic Knowledge Bases

We deene a new xpoint semantics for rule-based reasoning in the presence of vague or imprecise information. Such a semantics should fullll two requirements. First, it must coincide with the intuitive understanding of the given information, and second, the semantics must be computationally tractable. We show that our semantics fulllls the rst requirement and we formally verify that our xpoint se...

متن کامل

Probabilistic Knowledge Bases

We deene a new xpoint semantics for rule-based reasoning in the presence of imprecise information. We rst demonstrate the need to have such a rule-based semantics by showing a real-world application requiring such reasoning. We then deene this semantics. Optimizations and approximations of the semantics are shown so as to make the semantics amenable to very large scale real-world applications. ...

متن کامل

Clustering in Object Bases

We investigate clustering techniques that are speci cally tailored for object-oriented database systems. Unlike traditional database systems object-oriented data models incorporate the application behavior in the form of type-associated operations. This source of information is exploited for clustering decisions by statically determining the operations' access behavior applying data ow analysis...

متن کامل

ذخیره 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: ACM Transactions on Database Systems

سال: 2001

ISSN: 0362-5915,1557-4644

DOI: 10.1145/502030.502031