1. When is it true? (5 points for each correct answer, -3 point for each wrong answer, 0 point for each blank) Fill in each blank with “always,” “sometimes,” or “never.” For example, • A nonsingular matrix is always invertible. • A square matrix is sometimes full-rank. • A strictly tall matrix is never onto. Here the matrix dimensions are such that each expression makes sense, but they are othe...

The idea behind boosting is to construct an accurate hypothesis from a set of hypotheses that are each guaranteed to perform slightly better than random guessing on particular distributions of data. This idea originally arose from attempts to prove the robustness of the PAC model. By robustness, we mean the notion that slight alterations to the model definitions should not result in dramaticall...

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Face recognition is important in human identification. The biological recognition technique acts as a good method and broad applications in security areas. This work presents a method to improve the face recognition accuracy using a combination of Principal Component Analysis (PCA), and Wavelet Transform. Wavelet Transform is used to decompose the input image with different levels and rearrange...