关键词：大数据；旅游需求；GPS；模拟数据集
摘 要：We use simulated datasets to compare performance across different sample sizes, inference accuracies and estimation methods. Findings from the simulated datasets are corroborated with real data collected from individuals living in the San Francisco Bay Area, United States. Results indicate that the benefits of using GPS-based surveys will vary significantly, depending upon the sample size of the data, the accuracy of the inference algorithm and the desired complexity of the travel demand model specification. In many cases, gains in the volume of data that can potentially be retrieved using GPS devices may be offset by the loss in quality caused by inaccuracies in inference.