PROGRESS

Recent developments in PROGRESS. The least median of squares (LMS) regression method is highly robust to outliers in the data. It can be computed by means of PROGRESS (from Program for RObust reGRESSion). After ten years we have developed a new version of PROGRESS, which also computes the least trimmed squares (LTS) method. We will discuss the various new features of PROGRESS, with emphasis on the algorithmic aspects.