So sánh phương pháp

	Hồi quy tuyến tính trực tuyến	Hồi quy tuyến tính chính quy hóa
Lĩnh vực	Học máy	Học máy
Họ	Machine learning	Machine learning
Năm ra đời	1960 (LMS); 1950 (RLS formalization)	1970–2005
Người khởi xướng	Widrow, B. & Hoff, M. E. (LMS); Gauss / Plackett (RLS)	Hoerl & Kennard (Ridge, 1970); Tibshirani (Lasso, 1996); Zou & Hastie (Elastic Net, 2005)
Loại	Incremental supervised regression	Penalized linear model
Công trình gốc	Shalev-Shwartz, S. (2012). Online Learning and Online Convex Optimization. Foundations and Trends in Machine Learning, 4(2), 107–194.	Tibshirani, R. (1996). Regression shrinkage and selection via the lasso. Journal of the Royal Statistical Society: Series B, 58(1), 267–288.
Tên gọi khác	incremental linear regression, streaming linear regression, recursive least squares regression, stochastic gradient descent regression	Ridge regression, Lasso regression, Elastic Net regression, penalized regression
Liên quan	6	4
Tóm tắt	Online Linear Regression fits a linear model one observation at a time, updating weights incrementally as each new data point arrives. Unlike batch least-squares, it never needs to store or re-process the full dataset, making it the natural choice for streaming data, very large datasets, and environments where the data-generating process can shift over time.	Regularized linear regression adds a penalty term to the ordinary least-squares objective, shrinking or zeroing out coefficients to reduce overfitting and handle multicollinearity. The three main variants — Ridge (L2 penalty), Lasso (L1 penalty), and Elastic Net (combined L1+L2) — make linear regression usable even when features outnumber observations or predictors are highly correlated.