Name
Abstract | ||
|---|---|---|
There are numerous applications where we have to deal with temporal uncertainty associated with objects. The ability to automatically store and manipulate time, probabilities, and objects is important. We propose a data model and algebra for temporal probabilistic object bases (TPOBs), which allows us to specify the probability with which an event occurs at a given time point. In explicit TPOB-instances, the sets of time points along with their probability intervals are explicitly enumerated. In implicit TPOB-instances, sets of time points are expressed by constraints and their probability intervals by probability distribution functions. Thus, implicit object base instances are succinct representations of explicit ones; they allow for an efficient implementation of algebraic operations, while their explicit counterparts make defining algebraic operations easy. We extend the relational algebra to both explicit and implicit instances and prove that the operations on implicit instances correctly implement their counterpart on explicit instances. |
Year | DOI | Venue |
|---|---|---|
2003 | 10.1109/TKDE.2003.1209009 | IEEE Trans. Knowl. Data Eng. |
Keywords | Field | DocType |
temporal probabilistic object bases,algebraic operation,explicit counterpart,probability interval,time point,implicit tpob-instances,probability distribution function,implicit object base instance,implicit instance,explicit instance,explicit tpob-instances,probability,probabilistic database,relational algebra,indexing terms,relation algebra,temporal data,data models,data integrity,database theory,temporal databases,data model | Data mining,Data modeling,Computer science,Theoretical computer science,Temporal database,Probability distribution,Relational algebra,Probabilistic logic,Database theory,Data model,Algebraic operation | Journal |
Volume | Issue | ISSN |
15 | 4 | 1041-4347 |
Citations | PageRank | References |
3 | 0.80 | 29 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Veronica Biazzo | 1 | 172 | 10.42 |
| Rosalba Giugno | 2 | 817 | 49.45 |
| Thomas Lukasiewicz | 3 | 2618 | 165.18 |
| V. S. Subrahmanian | 4 | 6864 | 1053.38 |