There’s one wide-spread statement in statistics and machine learning literature that increased flexibility comes with decreased robustness in the test set. However, is it always true?

Why’s TSS (total sum of squares) equal to ESS (explained sum of squares) plus RSS (residual sum of squares)?

Markov’s Inequality, Chebyshev’s Inequality, and Cauchy—Schwarz Inequality

Integrate Python, R, and Julia in a single Jupyter Notebook for efficient data analysis by using Julia for fast data preparation, Python for machine learning, and R for visualization with ggplot2. Ensure all necessary kernels and libraries are installed for seamless operation.

Recent advances in AI, particularly generative large language models, enhance research efficiency through AI-augmented annotations, assisted programming, content-based file management, grammar correction, and idea generation, offering tools like Label Studio, GitHub Copilot, and BotAI for improved workflows.

To prevent data loss, use Syncthing for real-time file synchronization, Tailscale for secure internal networking, and GitHub for code backup and collaboration. This approach ensures data integrity and accessibility across multiple projects.

Causal inference is gaining traction in communication studies, with recent studies employing methods like Difference-in-Difference, Regression Discontinuity Design, Synthetic Control Method, and Instrumental Variable to analyze communication phenomena.

To install the LaTeX-OCR tool on M1, use Homebrew to install the compiled Qt library, then install PyTorch via Conda. Follow specific steps to set up the environment, and use the tool by running a Python command to recognize LaTeX images from the clipboard.

Polars outperforms Pandas significantly in speed tests for common data operations, completing tasks like importing CSV files and groupby/sum operations in a fraction of the time, demonstrating its efficiency on an Apple Silicon M1 environment.

We used logistic regression and random forest to predict user behaviors on a Chinese social network, Weibo.

This issue is related to Sklearn, one solution is to state a eligible Solver .

For .reindex , from 0.21.0, .loc or [] are not allowed to index with a list with one or more missing labels in Pandas。