Acad | Proof of TSS=ESS+RSS
Why’s TSS (total sum of squares) equal to ESS (explained sum of squares) plus RSS (residual sum of squares)?
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Acad | Proof of useful inequalities in Econometrics
Markov’s Inequality, Chebyshev’s Inequality, and Cauchy—Schwarz Inequality
Tech | Use Different Languages in One Jupyter Notebook: Python, R and Julia
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.
Acad | Integrating AI into Research
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.
Acad | Protect Research Data with Real-Time, Automated, Bidirectional Synchronization
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.
Acad | Causal Inference in Communication Studies
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.
Tech | Install LaTeX-OCR recognition tool on M1
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.
Tech | A Rust Magic: Polars vs Pandas Speed Test
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.
Data | Weibo Prediction Competition
We used logistic regression and random forest to predict user behaviors on a Chinese social network, Weibo.
Data | Sklearn PCA ValueError: array must not contain infs or NaNs
This issue is related to Sklearn, one solution is to state a eligible Solver .
Data | Indexing with list with missing labels is deprecated in Pandas
For .reindex , from 0.21.0, .loc or [] are not allowed to index with a list with one or more missing labels in Pandas。