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Tian


Last seen: 2 meses ago Active since 2021

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bootstrap clustering at region level
Dear community, I have a city-year level panel data, with 200 cities and 13 years. So each variable has size 2600x1. I have 40 ...

3 meses ago | 0 answers | 0

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fminunc initial point is local minimum, but fminsearch returns reasonable estaimtes
Hi, I have a dataset for individual i and time t. I try to find 3 parameters w,a,b to minimize an objective function. Given the...

3 meses ago | 1 answer | 0

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High dimension matrix summation: a + b != b + a
I have two matrices X1 and X2. Both are 10x15x10x10 dimensions. There are three scalars: ,and . Let i={i1,i2,i3,i4} denote the...

3 meses ago | 1 answer | 0

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Probit: removing groups that perfectly predict failures
Hi all, I have a group-year panel data as attahced. Apologies the data is very low quality. There are 3 groups, each has 20 ob...

4 meses ago | 1 answer | 0

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