UNIT 1 Recap of Hands-on AI I

Apuntes

UNIT 1 Recap of Hands-on AI I TABULAR DATA Which of the following statements are correct regarding tabular data? ... • In principle, images can be stored in tabular form. (24 R1) (23 R1) • There can be more features than samples in tabular data. (24 R1) • Tabular data might contain duplicate rows. (23 R1) • Rows in the table are called samples. (23 R1) • Columns in the table are called features. Which of the following statements is/are true about tabular data? • Feature vectors can directly be obtained from the table. (22 R1) • Tabular data can be used in supervised as well as unsupervised learning. (22 R1) • It consists of samples that contain information on a fixed set of properties/features. (22) • Each row corresponds to an individual sample. (22) DIMENSIONALITY REDUCTION Which of the following statements is/are true about dimensionality reduction? (24 R2) • Information will be lost by downprojecting data to for example 2 dimensions. • Dimensionality reduction techniques are useful for visualizing high dimensional data. REPRESENTATION OF IMAGES Which of the following statements is/are true about an RGB 8-bit image? (22) • It can be converted to grayscale without additional inf...