Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- ... A centered dataset with n = 116 observations and p = 9 variables was analysed to reduce its dimensionality. The following is a list of singular eigenvalues of X in decreasing order, that is d₁, d2, . . . , dg: 399.1338, 192.1412, 173.0043, 161.6635, 158.0541, 146.6826, 140.0039, 134.1633, 121.1941. A) Compute and write the numerical value of the eigenvalue 4 of Σ. This eigenvalue is located in the position (4, 4) of the matrix A and is simultaneously the sample variance of the score PC4: B) Compute and write the percentage of total variability explained by the Principal component PC4. The number you write should be between 0 and 100 and you should include decimals in your answer. C) A threshold of total variability explained has been set at 80%. How many principal components must you select? Write your answer (integer value).arrow_forward۲/۱ العنوان оне برات A- Consider a fuzzy logic controller is used to control the speed of a motor by changing its input voltage (V) according to two input variables; speed (SP), and speed change rate SC. Let the fuzzy set of SP be {Slow (S), Normal (N), Fast (F)), and the fuzzy set for SC be (Low (L), Medium (M), High (H)), and for the control action be {Slow (SCE [0, Down (DN), No Change (NC), Speed Up (Up)}, where, (SPE [250, 1000]), 10]), and (Ve [3, 8]) with step = 0.5. Find the control action if SP=910 And SC= 6.5 based on the fuzzy rules shown in table ^ S N F L Up NC NC M Up NC NC HNC DN DN Find tharrow_forwardTake plot (4.5, 5) and write program for this code. Using matlabarrow_forward
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