Synonyms
Top-k query processing; Spatio-temporal similarity search
Definition
Fast developments in wireless technologies and microelectronics made it feasible to develop economically viable embedded sensor systems for monitoring and understanding the physical world [5]. Traditional monitoring approaches, like passive sensing devices, transmit their readings to a centralized processing unit for storage and analysis. Wireless Sensor Devices (WSDs)on the other hand, are tiny computers on a chip that is often no bigger than a coin or credit card. These devices, equipped with a low frequency processor (≈ 4–58 MHz) and a wireless radio, can sense parameters such as, light, sound, temperature, humidity, pressure, noise levels, movement, and many others at extremely high resolutions. The applications of sensor networks range from environment monitoring (such as atmosphere and habitant monitoring, seismic and structural monitoring) to industry manufacturing (such as factory and process...
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Notes
- 1.
The terms access point and cell are used interchangeably.
- 2.
Sorted access is executed on a row-at-a-time basis
- 3.
Here we initialize Λ as K + 1 and set λ as K.
Recommended Reading
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Lin, S., Zeinalipour-Yazti, D., Gunopulos, D. (2008). Top-k Retrieval Techniques in Distributed Sensor Systems. In: Shekhar, S., Xiong, H. (eds) Encyclopedia of GIS. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35973-1_1395
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