منابع مشابه
Indexing the Imprecise Positions of Moving Objects
In moving object environments, it is rarely possible for the database to record the exact positions of moving objects at all times. Very often, the database does not have the objects' precise positions due to update delay, sampling error, or limitation of measuring equipments. Information retrieval directly based on uncertain data is meaningless, since the result does not have any quality guara...
متن کاملWorkload-Aware Indexing of Continuously Moving Objects
The increased deployment of sensors and data communication networks yields data management workloads with update loads that are intense, skewed, and highly bursty. Query loads resulting from location-based services are expected to exhibit similar characteristics. In such environments, index structures can easily become performance bottlenecks. We address the need for indexing that is adaptive t...
متن کاملIndexing of Continuously Moving Objects on Road Networks
In this paper, a new access method is proposed for current positions of moving objects on road networks in order to efficiently update their positions. In the existing index structures, the connectivity ofedges is lost because the intersection points in which three or more edges are split. The proposed index structure preserves the network connectivity, which uses intersection oriented network ...
متن کاملIndexing the Current Positions of Moving Objects Using the Lazy Update R-tree
With the rapid advances of wireless communications and positioning techniques, tracking the positions of moving objects is becoming increasingly feasible and necessary. Traditional spatial index structures are not suitable for storing these positions because of numerous update operations. To reduce the number of update operations, many existing approaches use a linear function to describe the m...
متن کاملProcessing Continuously Moving Queries on Moving Objects : The MobiEyes Approach ∗
Location monitoring is an important issue for real time management of mobile object positions. Significant research efforts have been dedicated to techniques for efficient processing of spatial continuous queries on moving objects in a centralized location monitoring system. Surprisingly, very few have promoted a distributed approach to real-time location monitoring. This paper presents a distr...
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: ACM SIGMOD Record
سال: 2000
ISSN: 0163-5808
DOI: 10.1145/335191.335427