STATS 231
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STANFORD UNIVERSITY STATS 231 HOMEWORK SOLUTIONS-ALL ANSWERS CORRECT
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STANFORD UNIVERSITY STATS 231 HOMEWORK SOLUTIONS-ALL ANSWERS CORRECT-A COMPLETE GUIDE FOR EXAM PREPARATION
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Stanford UniversitySTATS 231hw0-solutions
- Exam (elaborations) • 10 pages • 2021
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Homework 0 solutions 
CS229T/STATS231 
1. Linear algebra (0 points) 
a (dual norm of L1 norm) The L1 norm k · k1 of a vector v 2 Rn is defined as 
kvk1 = 
nX i 
=1 
jvij: (1) 
The dual norm k · k∗ of a norm k · k is defined as 
kvk∗ = sup 
kwk≤1 
(v · w): (2) 
Compute the dual norm of the L1 norm. (Here v · w denotes the inner product between v and w: v · w , 
Pn i=1 viwi) 
Solution: 
We will prove that 
sup 
kwk1≤1 
(v · w) = max 
i2[n] 
vi = kvk1 (3) 
which implies that the dua...
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Stanford University STATS 231 hw1-solutions.
- Exam (elaborations) • 10 pages • 2021
- Available in package deal
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- $9.49
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Homework 1 solutions 
CS229T/STATS231 (Fall) 
 
 
1. Value of labeled data (11 points) 
In many applications, labeled data is expensive and therefore limited, while unlabeled data is cheap and 
therefore abundant. For example, there are tons of images on the web, but getting labeled images is much 
harder. What is the statistical value of having labeled data versus unlabeled data? This problem will explore 
this formally using asymptotics. 
Specifically, suppose we have an exponential family mod...
-
Stanford University STATS 231 hw1-solutions.
- Exam (elaborations) • 10 pages • 2021
- Available in package deal
-
- $9.49
- + learn more
Homework 1 solutions 
CS229T/STATS231 (Fall) 
 
 
1. Value of labeled data (11 points) 
In many applications, labeled data is expensive and therefore limited, while unlabeled data is cheap and 
therefore abundant. For example, there are tons of images on the web, but getting labeled images is much 
harder. What is the statistical value of having labeled data versus unlabeled data? This problem will explore 
this formally using asymptotics. 
Specifically, suppose we have an exponential family mod...
-
Stanford University STATS 231 hw1-solutions.
- Exam (elaborations) • 10 pages • 2021
- Available in package deal
-
- $9.49
- + learn more
Homework 1 solutions 
CS229T/STATS231 (Fall) 
 
 
1. Value of labeled data (11 points) 
In many applications, labeled data is expensive and therefore limited, while unlabeled data is cheap and 
therefore abundant. For example, there are tons of images on the web, but getting labeled images is much 
harder. What is the statistical value of having labeled data versus unlabeled data? This problem will explore 
this formally using asymptotics. 
Specifically, suppose we have an exponential family mod...
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