ZhangZhihuiAAA - 博客园

Data Science and Analytics with Python Study Notes 2

摘要： The correlation coefficient is a numerical measure that describes the strength and direction of a linear relationship between two variables. The Most 阅读全文

posted @ 2025-07-03 10:25 ZhangZhihuiAAA 阅读(15) 评论(0) 推荐(0)

Machine Learning - Training Data, Validation Data and Test Data

摘要： In machine learning, data is often split into three parts—training, validation, and testing—to ensure that the model learns effectively and generalize 阅读全文

posted @ 2025-07-02 22:49 ZhangZhihuiAAA 阅读(37) 评论(0) 推荐(0)

Pyenv - WARNING: The Python sqlite3 extension was not compiled

摘要： zzh@ZZHPC:~/.pyenv/bin$ ./pyenv install 3.13.5 Downloading Python-3.13.5.tar.xz... -> https://www.python.org/ftp/python/3.13.5/Python-3.13.5.tar.xz In 阅读全文

posted @ 2025-07-01 14:42 ZhangZhihuiAAA 阅读(62) 评论(0) 推荐(0)

Numpy - Difference between dot() and cross()

摘要： 1. numpy.dot() — Dot Product (Scalar or Matrix Multiplication) ✅ Purpose: Computes the dot product of two vectors, or does matrix multiplication if 2D 阅读全文

posted @ 2025-07-01 08:28 ZhangZhihuiAAA 阅读(63) 评论(0) 推荐(0)

Data Science and Analytics with Python Study Notes 1

摘要： 1.3 Data Science Tools • Data framework: BigQuery, Spark, Databricks, Snowflake. • Streaming data collection: Kafka, Flink, Amazon Kinesis. • Job sche 阅读全文

posted @ 2025-06-30 21:54 ZhangZhihuiAAA 阅读(12) 评论(0) 推荐(0)

Knowledge Graph - Study Notes 8

摘要： BFO (Basic Formal Ontology) SHACL RML, R2RML, RocketRML WSMF 阅读全文

posted @ 2025-06-29 18:33 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Knowledge Graph - Study Notes 7

摘要： https://schema.org/docs/full.html https://schema.org/LodgingBusiness https://schema.org/address 阅读全文

posted @ 2025-06-24 22:14 ZhangZhihuiAAA 阅读(14) 评论(0) 推荐(0)

Knowledge Graph - Study Notes 6

摘要： Propositional logic is one of the simplest and most common logic and lies at the core of all other logical formalisms. ALC SOL L2V 阅读全文

posted @ 2025-06-22 11:31 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

A Concise Introduction to Logic - PART III: INDUCTIVE LOGIC - Chapter 13 and Chapter 14

摘要： PART III: INDUCTIVE LOGIC Chapter 13: Hypothetical / Scientific Reasoning 13.1 The Hypothetical Method Hypothetical reasoning is most immediately appl 阅读全文

posted @ 2025-06-21 21:54 ZhangZhihuiAAA 阅读(77) 评论(0) 推荐(0)

A Concise Introduction to Logic - PART III: INDUCTIVE LOGIC - Chapter 11 and Chapter 12

摘要： PART III: INDUCTIVE LOGIC Chapter 11: Probability 11.1 Theories of Probability Probability is a topic that is central to the question of induction, bu 阅读全文

posted @ 2025-06-21 19:41 ZhangZhihuiAAA 阅读(21) 评论(0) 推荐(0)

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