Berk U.

Cambridge, MA

berkustun.com

Age: 27

I am a Ph.D. student in the Electrical Engineering and Computer Science Department at MIT. I am interested in developing new methods for data-driven decision-making and using them to solve problems in areas such as climate change, crime prediction, healthcare and revenue management.

Jun
30
awarded Nice Question
Jun
24
awarded Popular Question
Jun
21
revised Signs and value of higher order terms in the Taylor expansion of a strongly convex function
deleted 81 characters in body
Jun
19
revised Signs and value of higher order terms in the Taylor expansion of a strongly convex function
deleted 25 characters in body
Jun
19
revised Signs and value of higher order terms in the Taylor expansion of a strongly convex function
added 10 characters in body
Jun
19
comment Signs and value of higher order terms in the Taylor expansion of a strongly convex function
@TommiBrander Thank you for pointing this out! I fixed the statement. The problem that I'm interested in is actually about function that is continuous/infinitely differentiable function over a closed set.
Jun
19
revised Signs and value of higher order terms in the Taylor expansion of a strongly convex function
added 10 characters in body
Jun
19
awarded Autobiographer
Jun
19
asked Signs and value of higher order terms in the Taylor expansion of a strongly convex function
Jun
19
revised Passing an array variable to a job using qsub -v in PBS Torque
added 86 characters in body; edited tags; edited title
Jun
19
comment Passing an array variable to a job using qsub -v in PBS Torque
@EtanReisner Ugh yeah I'm stuck with this. I looked online everywhere but there doesn't seem to be a solution. I also tried specifying array elements within the list but that doesn't seem to work either var1=${string_var},var2[0]=${array_var[0]},var2[1]=${array_var[1]},var2[2]=${ar­‌​ray_var[2]},var2[3]=${array_var[3]}) but that didn't work either.
Jun
18
revised Passing an array variable to a job using qsub -v in PBS Torque
deleted 66 characters in body
Jun
18
comment Passing an array variable to a job using qsub -v in PBS Torque
@EtanReisner Thanks! I tried the version you suggested, as well as a few variations on it, but no luck. I think that what is messing it up are the spaces, and possibly the parentheses (I also get the same issue with a 1-D array). Is there a way to process the output of declare -p array_var so that I can pass var1=${string_var},var2[0]=${array_var[0]},var2[1]=${array_var[1]},var2[2]=${ar­ray_var[2]},var2[3]=${array_var[3]})?
Jun
18
comment Passing an array variable to a job using qsub -v in PBS Torque
@Etan Reisner I'm not 100% sure, but man qsub says "-v variable_list: Expands the list of environment variables that are exported to the job. variable_list names environment variables from the qsub command environment which are made available to the job when it executes. The variable_list is a comma separated list of strings of the form variable or variable=value. These variables and their values are passed to the job.
Jun
18
asked Passing an array variable to a job using qsub -v in PBS Torque
Jun
17
asked Signs and value of higher order terms in the Taylor expansion of a strongly convex function
Jun
15
accepted Bounding the Eigenvalues of a Scaled Covariance Matrix
Jun
15
comment Bounding the Eigenvalues of a Scaled Covariance Matrix
Thanks! I see why $X^T X$ and $X^T X D$ are positive definite, but I don't see why $X^T X D X$ is positive definite. Was that just a typo?
Jun
15
revised Bounding the Eigenvalues of a Scaled Covariance Matrix
edited tags
Jun
15
asked Bounding the Eigenvalues of a Scaled Covariance Matrix
1 2 3 4 5