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Long Hong


Last seen: environ un an il y a |  Actif depuis 2020

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Question


How to get linearly independent subset of matrix columns in a high-dimensional matrix
Dear all: I have a few sets of fixed effects in my linear model, which has a collinearity problem since the rank does not match...

plus de 3 ans il y a | 1 réponse | 0

1

réponse

Question


sparse matrix with data type as 'single'
Dear all: I have a very large sparse matrix that I hope to reduce the size further more. I noticed that in full matrix, one cou...

presque 4 ans il y a | 1 réponse | 1

1

réponse

Question


identify peers within a firm - sparse matrix only
Dear all: This is a follow-up post from my previous one, which has been solved by @Image Analyst. Now I have encountered a new ...

presque 4 ans il y a | 1 réponse | 0

0

réponse

Question


Get the diagonal without calculating the explicit matrix
Dear all: I am trying to calculate a diagonal of a matrix (denoted A), which is formed by multiplying two large-dimensional mat...

environ 4 ans il y a | 2 réponses | 0

2

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Question


Identify the peers within a firm
Dear all: I am working on a panel dataset, which contains worker ID, firm ID, and year. Each worker works for one firm only in ...

environ 4 ans il y a | 1 réponse | 0

1

réponse