197 reputation
6
bio website
location Wuhan, China
age 24
visits member for 2 years, 10 months
seen Jun 4 at 12:13

Jul
2
awarded  Curious
Mar
24
awarded  Tumbleweed
Mar
17
asked Integration over multinomial model paramters
Nov
5
accepted Limit of $\frac{1}{a} + \frac{2}{a^2} + \cdots + \frac{n}{a^n}$
Nov
4
asked Limit of $\frac{1}{a} + \frac{2}{a^2} + \cdots + \frac{n}{a^n}$
Jan
4
asked How to find normal vector of line given point normal passes through
Sep
27
asked A derivation problem related with Hidden Markov Chain
Sep
27
awarded  Supporter
Sep
26
comment How to prove two equations in linear algebra
thx, but can you explain what chain rule is? I think that is the obstacle for me to understand.
Sep
26
asked How to prove two equations in linear algebra
Sep
25
accepted matrix multiplication convergence problem
Sep
25
awarded  Student
Sep
25
asked matrix multiplication convergence problem
Sep
19
accepted What is empirical accuracy?
Sep
19
comment What is empirical accuracy?
Really impressive! Thanks
Sep
18
comment What is empirical accuracy?
@J. M, Introduction to Data Mining, by Pang-Ning Tan, Michael Steinbach and Vipin Kumar
Sep
18
awarded  Editor
Sep
18
comment What is empirical accuracy?
thanks for the recommendation, I made some edit. @J. M
Sep
18
revised What is empirical accuracy?
clarify where the term is used
Sep
18
asked What is empirical accuracy?