Wiki Office Open XML (also informally known as OOXML or OpenXML) is a zipped, XML-based file format developed by Microsoft for representing spreadsheets, charts, presentations and word processing documents. Because Excel file is base on Open XML, so we can…
RecSys Related Algorithm - SVD
Introduction If we want to predict the user A's rating of the book X, but we only have the A's rating for some other books and user B's rating of the book X. How can we predict the A's rating…
Go Binary Tree Traversal
a / \ b c / \ d f / / e g Preorder: a → b → d → e → f → g → c Inorder: e → d → b → g → f → a →…
Enable IPv6 for Server
We can check the current state of the IPv6 address configuration by typing: $ ip -6 addr show eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000 inet6 2604:a880:400:d0::218:2001/64 scope global valid_lft forever preferred_lft forever inet6 fe80::601:c0ff:fea1:4101/64 scope link valid_lft forever…