# From Landscape to Portrait: A New Approach for Outlier Detection in Load Curve Data

arXiv: https://arxiv.org/abs/1307.7751 · HTML: https://mlsanity.com/paper/1307.7751/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 29 Jul 2013.

## Built on by (most cited first, 1 of 1)

- [ALDI++: Automatic and parameter-less discord and outlier detection for building energy load profiles](https://mlsanity.com/paper/2203.06618/) (2022)

## Abstract (arXiv)

In power systems, load curve data is one of the most important datasets that are collected and retained by utilities. The quality of load curve data, however, is hard to guarantee since the data is subject to communication losses, meter malfunctions, and many other impacts. In this paper, a new approach to analyzing load curve data is presented. The method adopts a new view, termed textitportrait, on the load curve data by analyzing the periodic patterns in the data and re-organizing the data for ease of analysis. Furthermore, we introduce algorithms to build the virtual portrait load curve data, and demonstrate its application on load curve data cleansing. Compared to existing regression-based methods, our method is much faster and more accurate for both small-scale and large-scale real-world datasets.