identification of partitions in a homogeneous activity group using mobile devices
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ID: 185642
2016
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Abstract
People in public areas often appear in groups. People with homogeneous coarse-grained activities may be further divided into subgroups depending on more fine-grained behavioral differences. Automatically identifying these subgroups can benefit a variety of applications for group members. In this work, we focus on identifying such subgroups in a homogeneous activity group (i.e., a group of people who perform the same coarse-grained activity at the same time). We present a generic framework using sensors built in commodity mobile devices. Specifically, we propose a two-stage process, sensing modality selection given a coarse-grained activity, followed by multimodal clustering to identify subgroups. We develop one early fusion and one late fusion multimodal clustering algorithm. We evaluate our approaches using multiple datasets; two of them are with the same activity while the other has a different activity. The evaluation results show that the proposed multimodal-based approaches outperform existing work that uses only one single sensing modality and they also work in scenarios when manually selecting one sensing modality fails.
| Reference Key |
yu2016mobileidentification
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|---|---|
| Authors | ;Na Yu;Yongjian Zhao;Qi Han;Weiping Zhu;Hejun Wu |
| Journal | ui sahak |
| Year | 2016 |
| DOI |
10.1155/2016/3545327
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| URL | |
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