Affiliations: [a] Madras Institute of Technology, Anna University, Chennai, India
| [b]
Anna University, Chennai, India
Correspondence:
[*]
Corresponding author. Nancy Jane Yesudhas, Madras Institute of Technology, Anna University, Chennai-600044, India. E-mail: [email protected].
Abstract: The development of advanced technologies in variety of domains such as health care, sensor measurements, intrusion detection, motion capture, environment monitoring have directed to the emergence of large scale time stamped data that varies over time. These data are influenced by complexities such as missing values, multivariate attributes, time-stamped features. The objective of the paper is to construct temporal classification framework using stacked Gated Recurrent Unit (S-GRU) for predicting ozone level. Ozone level prediction plays a vital role for accomplishing healthy living environment. Temporal missing value imputation and temporal classification are two functions performed by the proposed system. In temporal missing value imputation, the temporal correlated k-nearest neighbors (TCO-KNN) approach is presented to address missing values. Using attribute dependency based KNN, the nearest significant set is identified for each missing value. The missing values are imputed using the mean values from the determined closest significant set. In temporal classification, the classification model is build using stacked gated recurrent unit (S-GRU). The performance of the proposed framework investigated using ozone multivariate temporal data sets shows improvement in classification accuracy compared to other state of art methods.
Keywords: Multivariate time series data, decision making, knowledge discovery, ozone level prediction, K-nearest neighbors (KNN), stacked gated recurrent unit (S-GRU)
