Data Mining

Activity Learning: Discovering, Recognizing, and Predicting by Diane J. Cook PDF

By Diane J. Cook

ISBN-10: 111889376X

ISBN-13: 9781118893760

Defines the thought of an task version realized from sensor facts and offers key algorithms that shape the center of the field

Activity studying: learning, spotting and Predicting Human habit from Sensor Data presents an in-depth examine computational ways to job studying from sensor information. every one bankruptcy is developed to supply useful, step by step info on the right way to research and approach sensor info. The publication discusses concepts for task studying that come with the following:

  • Discovering task styles that emerge from behavior-based sensor data
  • Recognizing occurrences of predefined or found actions in actual time
  • Predicting the occurrences of activities

The innovations lined could be utilized to varied fields, together with safeguard, telecommunications, healthcare, clever grids, and residential automation. a web significant other web site allows readers to test with the recommendations defined within the e-book, and to evolve or improve the recommendations for his or her personal use.

With an emphasis on computational ways, Activity studying: getting to know, spotting, and Predicting Human habit from Sensor Data presents graduate scholars and researchers with an algorithmic point of view to task learning.

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Additional resources for Activity Learning: Discovering, Recognizing, and Predicting Human Behavior from Sensor Data

Sample text

As before, we consider events that indicate activity and not a lack of activity. 3 Statistical Features While some features generate messages only when a particular condition is detected, many others report numeric state values at near-constant time intervals. Such data constitutes a sequence of sensor values measured at uniform time intervals, or a time series. As a result, many of the methods used to extract features from time series data can be used in this context. Examples of this type of sensor that are used to monitor activities include accelerometers, gyroscopes, light sensors, temperature sensors, and power usage monitors.

16) i=1 • Peak-to-Peak Amplitude. This value represents the change between the peak (highest value) and trough (lowest value) of the signal. For sensor values, we can compute the difference between the maximum and minimum values of the set. 17) • Time Between Peaks. This value represents the time delay between successive occurrences of a maximum value. When processing sensor values that are not strictly sinusoidal signals, special attention must be paid to determine what constitutes a peak. A peak may be a value within a fixed range of the maximum value, or it may be a spike or sudden increase in values.

For example, gyroscope readings are often packaged with accelerometer readings to provide six-dimensional motion data vectors. Magnetometer This sensor measures the strength of the magnetic field in three dimensions. While it bears some similarity to a compass, it does not always behave the same as a compass because the magnetometer may not always point north when it is influenced by magnetic interference. A magnetometer is valuable for providing some sensor orientation and for detecting and locating metallic objects within its sensing radius.

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Activity Learning: Discovering, Recognizing, and Predicting Human Behavior from Sensor Data by Diane J. Cook


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