arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.11478cs.LGeess.SPstat.ML
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基于温启动梯度树Boosting混合策略的短期负荷预测

Short-term Load Forecasting Based on Hybrid Strategy Using Warm-start Gradient Tree Boosting

Southeast University(东南大学);National University of Singapore(新加坡国立大学);University of Illinois at Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校)

Yuexin Zhang, Jiahong Wang

摘要:

提出了一种基于深度学习的短期负荷预测混合策略。该策略提出了一种新的基于树的集成方法Warm-start Gradient Tree Boosting(WGTB)。目前的策略要么是单一类型的集成子模型,无法利用不同推理模型的统计优势。或者他们只是简单地将完全不同的推理模型的输出相加,这并不能最大限度地发挥集成的潜力。受偏差-方差权衡的启发,WGTB被提出,并针对不同推理模型在准确性、波动性和线性度上的巨大差异而定制。完整的策略整合了四种不同能力的推理模型。然后,WGTB通过热启动以及装袋和提升的混合来集成它们的输出,从而同时降低偏差和方差。在国家电网公司的两个小时分辨率的实际数据集上进行了验证。结果表明,所提出的策略的有效性,杂交的低偏差和低方差推理模型的统计优势。

英文摘要:

A deep-learning-based hybrid strategy for short-term load forecasting is presented. The strategy proposes a novel tree-based ensemble method Warm-start Gradient Tree Boosting (WGTB). Current strategies either ensemble submodels of a single type, which fail to take advantage of the statistical strengths of different inference models. Or they simply sum the outputs from completely different inference models, which doesn't maximize the potential of ensemble. Inspired by the bias-variance trade-off, WGTB is proposed and tailored to the great disparity among different inference models on accuracy, volatility and linearity. The complete strategy integrates four different inference models of different capacities. WGTB then ensembles their outputs by a warm-start and a hybrid of bagging and boosting, which lowers bias and variance concurrently. It is validated on two real datasets from State Grid Corporation of China of hourly resolution. The result demonstrates the effectiveness of the proposed strategy that hybridizes the statistical strengths of both low-bias and low-variance inference models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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