Traffic flow prediction is a fundamental component in Intelligent Transportation Systems (ITS). Nearest neighbor based nonparametric regression method is a classic data-driven method for traffic flow prediction. Modern data collection technologies provide the opportunity to represent various features of the nonlinear complex system which also bring challenges to fuse the multiple sources of data. Firstly, the classic Euclidean distance metric based models for traffic flow prediction that treat each feature with equal weight is not effective in multi-source high-dimension feature space. Secondly, traditional handcrafting feature engineering by experts is tedious and error-prone. Thirdly, the traffic conditions in real-life situation are too complex to measure with only one distance metric. In this paper, we propose a hybrid multi-metric based k-nearest neighbor method (HMMKNN) for traffic flow prediction which can seize the intrinsic features in data and reduce the semantic gap between domain knowledge and handcrafted feature engineering. Experimental results demonstrate multi-source data fusion helps to improve the performance of traffic parameter prediction and HMMKNN outperforms the traditional Euclidean-based k-NN under various configurations. Furthermore, visualization of feature transformation clustering results implies the learned metrics are more reasonable.
Hybrid Multi-metric K-Nearest Neighbor Regression for Traffic Flow Prediction
2015-09-01
612133 byte
Conference paper
Electronic Resource
English
Time-Aware Multivariate Nearest Neighbor Regression Methods for Traffic Flow Prediction
Online Contents | 2015
|Composite Nearest Neighbor Nonparametric Regression to Improve Traffic Prediction
Transportation Research Record | 2007
|Composite Nearest Neighbor Nonparametric Regression to Improve Traffic Prediction
Online Contents | 2007
|