图 书 馆
从稀疏自我报告数据预测心理健康的序列多任务学习Sequence Multi-task Learning to Forecast Mental Wellbeing from Sparse Self-reported Data |
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| 课程网址: | http://videolectures.net/kdd2019_spathis_rodriguez_farrahi/ |
| 主讲教师: | Dimitris Spathis |
| 开课单位: | 剑桥大学 |
| 开课时间: | 2020-03-02 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Smartphones have started to be used as self reporting tools for mental health state as they accompany individuals during their days and can therefore gather temporally fine grained data. However, the analysis of self reported mood data offers challenges related to non-homogeneity of mood assessment among individuals due to the complexity of the feeling and the reporting scales, as well as the noise and sparseness of the reports when collected in the wild. In this paper, we propose a new end-to-end ML model inspired by video frame prediction and machine translation, that forecasts future sequences of mood from previous self-reported moods collected in the real world using mobile devices. Contrary to traditional time series forecasting algorithms, our multi-task encoder-decoder recurrent neural network learns patterns from different users, allowing and improving the prediction for users with limited number of self-reports. Unlike traditional feature-based machine learning algorithms, the encoder-decoder architecture enables to forecast a sequence of future moods rather than one single step. Meanwhile, multi-task learning exploits some unique characteristics of the data (mood is bi-dimensional), achieving better results than when training single-task networks or other classifiers. Our experiments using a real-world dataset of 33,000 user-weeks revealed that (i) 3 weeks of sparsely reported mood is the optimal number to accurately forecast mood, (ii) multi-task learning models both dimensions of mood “valence and arousal” with higher accuracy than separate or traditional ML models, and (iii) mood variability, personality traits and day of the week play a key role in the performance of our model. We believe this work provides psychologists and developers of future mobile mental health applications with a ready-to-use and effective tool for early diagnosis of mental health issues at scale. How can we assist you? |
| 关 键 词: | 从稀疏自我报告数据预测; 预测心理健康; 序列多任务学习; 视频帧预测; 心理健康状况 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2022-09-15：cyh |
| 最后编审: | 2022-09-19：cyh |
| 阅读次数: | 43 |