diff --git a/fundamentals-of-ai-and-kr/main.pdf b/fundamentals-of-ai-and-kr/main.pdf
index 87914be..c60d016 100644
Binary files a/fundamentals-of-ai-and-kr/main.pdf and b/fundamentals-of-ai-and-kr/main.pdf differ
diff --git a/machine-learning-and-data-mining/main.pdf b/machine-learning-and-data-mining/main.pdf
new file mode 100644
index 0000000..e145a9f
Binary files /dev/null and b/machine-learning-and-data-mining/main.pdf differ
diff --git a/statistical-and-mathematical-methods-for-ai/main.pdf b/statistical-and-mathematical-methods-for-ai/main.pdf
index 993bc74..d33c9e0 100644
Binary files a/statistical-and-mathematical-methods-for-ai/main.pdf and b/statistical-and-mathematical-methods-for-ai/main.pdf differ