Happy Is...

Let your child's imagination run wild in this wonderfully busy, search-and-find board book - follow fun characters, spot and count things, and have an entertaining, I-spy adventure!A board book that's perfect for pre-readers and children beginning to read, they'll learn to identify characters, search-and-find, and count interesting items on pages filled with fun, bustling scenes.This wonderfully interactive book draws children into the scenes on the page and encourages them to become a part of the action. Each page depicts a different location such as a sunny beach, a colorful toy shop, or a beautiful park - and interesting characters throughout!Children are encouraged to spot different items on the pages such as animals, toys, people, then to count, name, and make up a story. The book also has open-ended prompts on each page which encourages observation, conversation, and exploration.A Delightful Adventure For Children 18 Months - 5 YearsThis is an exciting book for young children on

本書圍繞數據降維技術，分別針對線性降維和非線性降維兩種降維手段進行廣泛而深入的討論。對於線性降維技術，本書介紹了常用的降維算法，並對線性降維與矩陣分解的等價性進行了分析，在此基礎上提出了semi-NMF、OCA、IOCA、EOCA等改進算法並進行詳細的理論分析和實驗驗證。對於非線性降維算法，本書介紹了常用算法，包括流形學習算法、基於核方法和基於神經網絡的數據降維，並提出了改進的基準點選取SL-Is