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分类依据与纠错

AI 根据所提供的论文材料归类:摘要直接比较电力负荷时间序列预测模型,并讨论预测跨度、外生变量及误差表现。

反馈分类问题

IISE PG&E Energy Analytics Challenge 2025: Hourly-Binned Regression Models Beat Transformers in Load Forecasting

2025年 IISE PG&E 能源分析挑战:按小时回归模型优于 Transformer 的负荷预测

正在核对关联版本…

代码、数据与补充材料

正在核对对应版本的资源…

关注这篇论文的作者
Millend Roy
Vladimir Pyltsov
Yinbo Hu

2025年 IISE PG&E 能源分析挑战:按小时回归模型优于 Transformer 的负荷预测

研究问题
在历史样本和外生变量有限、测试负荷不可见的电力预测任务中,复杂深度模型是否优于按小时建立的回归模型?
方法与思路
作者利用两年五站点负荷、温度和辐照度数据,结合 PCA 与按小时回归,将二十四个模型的预测组合为年度预测。
材料陈述的贡献
摘要称 TimeGPT 等深度模型未持续优于简单方法,XGBoost 在所述测试案例中误差最低,强调模型选择需考虑数据特点。
阅读关注点
应核对日前预测与年度预测的任务关系、隐藏测试值下的评分来源,以及天气信息可用性、数据划分和误差累积处理。
阅读边界
这是预印本,同行评审及期刊接收未获核实;摘要对预测跨度和测试评分交代有限,不能推断回归模型普遍优于 Transformer。

原文摘要

Accurate electricity load forecasting is essential for grid stability, resource optimization, and renewable energy integration. While transformer-based deep learning models like TimeGPT have gained traction in time-series forecasting, their effectiveness in long-term electricity load prediction remains uncertain. This study evaluates forecasting models ranging from classical regression techniques to advanced deep learning architectures using data from the ESD 2025 competition. The dataset includes two years of historical electricity load data, alongside temperature and global horizontal irradiance (GHI) across five sites, with a one-day-ahead forecasting horizon. Since actual test set load values remain undisclosed, leveraging predicted values would accumulate errors, making this a long-term forecasting challenge. We employ (i) Principal Component Analysis (PCA) for dimensionality reduction and (ii) frame the task as a regression problem, using temperature and GHI as covariates to predict load for each hour, (iii) ultimately stacking 24 models to generate yearly forecasts. Our results reveal that deep learning models, including TimeGPT, fail to consistently outperform simpler statistical and machine learning approaches due to the limited availability of training data and exogenous variables. In contrast, XGBoost, with minimal feature engineering, delivers the lowest error rates across all test cases while maintaining computational efficiency. This highlights the limitations of deep learning in long-term electricity forecasting and reinforces the importance of model selection based on dataset characteristics rather than complexity. Our study provides insights into practical forecasting applications and contributes to the ongoing discussion on the trade-offs between traditional and modern forecasting methods.

笔记与分组
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