NOTE: Article in Progress
Introduction
Depending on the domain, acquiring data is a challenging task. Even though in the internet age, automated mechanisms seem to be the dominant way to acquire data, there are several fields where data is still acquired manually. Manual data acquisition usually involves field visits, face-to-face conversations, interviews etc. However, automated methods are used, where direct human intervention is impossible and not feasible due to socio-economic reasons.
Sensors are commonly used for automated data acquisition. Temperature, pressure, rainfall, humidity, luminosity sensors are placed at strategic locations. Some of these sensors come along with memory devices that can store data for quite a long period of time, whereas other group of sensors do not have any or possesse very limited storing capacity. Such low-memory sensors are installed in places with network connectivity so that they can send measurement values periodically to data centers.
It is important to understand the characteristics and limitations of data acquisition tools before actually using them.
- Surveys
- Manual surveys
- Online surveys
- Sensors
- Temperature, pressure, humidity, rainfall
- Acoustic, navigation
- Proximity, presence sensors
- Social networks
- Video surveillance cameras
- Web
Privacy, ethics
Licence
References
- Data acquisition
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