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

By Diane J. Cook

ISBN-10: 111889376X

ISBN-13: 9781118893760

Defines the suggestion of an job version discovered from sensor facts and offers key algorithms that shape the center of the field

Activity studying: gaining knowledge of, spotting and Predicting Human habit from Sensor Data presents an in-depth examine computational methods to task studying from sensor info. each one bankruptcy is built to supply functional, step by step details on easy methods to learn and strategy sensor facts. The e-book discusses innovations for task studying that come with the following:

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

The ideas lined will be utilized to varied fields, together with protection, telecommunications, healthcare, clever grids, and residential automation. a web spouse website allows readers to scan with the thoughts defined within the ebook, and to evolve or increase the ideas for his or her personal use.

With an emphasis on computational methods, Activity studying: studying, 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

Example text

21. 21) i=1 As with the other features, we extract the spectral features for our Sweeping activity example. 6 summarizes these spectral sensor features. 5 SENSING Activity Context Features All of the features that we discussed in this chapter are extracted from a single window of sensor events. However, the context that is defined from events outside the window can be influential as well in modeling and learning the current activity. • Previous Activity. The activity label for the previous window can be very helpful in understanding the activity in the current window.

24. 24) k=1 The prior P(C = c) can be estimated by computing the distribution of samples in every class c. 24, where tC is the number of training instances for which both the class C = c and the classifier output Sk = sk . The term t represents the number of total training instances. 25) Another approach to classifier fusion is to formulate it as a supervised learning problem. This approach simply treats the outputs of multiple classifiers as input to a second-level classifier, and uses classical supervised learning techniques, such as those described in Chapter 4, to generate the final classification output.

1 Output signal PIR infrared sensor packaging (left) and internal architecture (right). 2 The two components of a magnetic contact switch encased in plastic (left) and a magnetic contact switch acting as a door open/shut sensor (right). 2. 2 is closed, the magnet component pulls the metal switch in the second component closed so the electric circuit is complete, thus changing the state of the sensor. The sensor can report this change of state as a sensor event. When the magnet is moved by opening the door, the spring snaps the switch back into the open positive.

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

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