Mathematics, 20.02.2020 23:50 chant9
Let X e Rnd be a data matrix, consisting of n samples, cach of which has d features, and let y R" be a vector of outcomes. For example, each row of X could have information about a house on the market, like its area, number of floors, number of bathrooms/bedrooms, etc. and each entry of y could be the price of that house. We are interested in building a model that predicts house prices from the set of its features, as listed above. Suppose that domain knowledge tells us that the relationship between the features and outcomes is linear; ideally, there exists a set of parameters e Rd such that Xo = y. However, n is large and there is noise in the acquisition of X and y, so this system is overdetermined. Still, we wish to find the best linear approximation, ie. we want to find the θ that minimizes the loss L(θ)-lly-X613. Assuming X has full column rank, compute θ': arg mine L(θ) in terms of X and y 2*
Answers: 2
Mathematics, 21.06.2019 13:20
Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel
Answers: 1
Mathematics, 21.06.2019 16:30
Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.
Answers: 3
Mathematics, 22.06.2019 01:10
Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?
Answers: 2
Let X e Rnd be a data matrix, consisting of n samples, cach of which has d features, and let y R" be...
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