Time2Graph: Revisiting Time Series Modeling with Dynamic Shapelets
Authors: Ziqiang Cheng, Yang Yang, Wei Wang, Wenjie Hu, Yueting Zhuang, Guojie Song3617-3624
AAAI 2020 | Conference PDF | Archive PDF | Plain Text | LLM Run Details
| Reproducibility Variable | Result | LLM Response |
|---|---|---|
| Research Type | Experimental | To validate whether the representations obtained in this way can be applied effectively in various scenarios, we conduct experiments based on three public time series datasets, and two real-world datasets from different domains. Experimental results clearly show the improvements achieved by our approach compared with 16 state-of-the-art baselines. |
| Researcher Affiliation | Collaboration | College of Computer Science and Technology, Zhejiang University State Grid Huzhou Power Supply Co. Ltd, China Key Laboratory of Machine Perception, Ministry of Education, Peking University |
| Pseudocode | Yes | Algorithm 1 Shapelet Evolution Graph Construction; Algorithm 2 Time Series Embedding Framework |
| Open Source Code | Yes | the source codes, along with the implementation details, parameter settings and documentations, can be found on the project homepage: https://petecheng.github.io/Time2Graph. |
| Open Datasets | Yes | We use three public datasets, Earthquakes (EQS), Worms Two Class (WTC) and Strawberry (STB) from the UCR Time Series Archive (Dau et al. 2018) |
| Dataset Splits | Yes | We choose XGBoost (Chen and Guestrin 2016) as the outer classifier, and use 5-fold nested cross-validation to conduct fine-tuning on hyper-parameters. |
| Hardware Specification | No | The paper does not specify the hardware (e.g., CPU, GPU models, memory) used for running the experiments. |
| Software Dependencies | No | The paper mentions using "XGBoost" but does not specify version numbers for XGBoost or any other software dependencies. |
| Experiment Setup | Yes | We examine the sensitivities of three important hyperparameters: number of selected shapelets K, graph embedding size B and segment length l. |