Mathematics
Joscha Fregin's user avatar
Joscha Fregin's user avatar
Joscha Fregin's user avatar
Joscha Fregin
  • Member for 3 years
  • Last seen this week
  • Hamburg, Deutschland
Profile Activity
Stats
146
reputation
82
reached
1
answer
0
questions
Communities
View all
About

Meteorologist, currently working on numerical time stepping methods to improve NWP.

He/him.

Badges
This user doesn’t have any gold badges yet.
This user doesn’t have any silver badges yet.
5
bronze badges
Top tags
3
Score
1
Posts
100
Posts %
3
Score
1
Posts
100
Posts %
Top posts
All Questions Answers
Score Newest
answer
3
Simplify ${\nabla}_\theta J(\theta) = \frac{1}{n} \sum_{i=1}^n \frac{1}{1 + e^{-y_i \theta^\intercal x_i}} e^{-y_i \theta^\intercal x_i}({-y_i x_i})$
Nov 19, 2021
Top network posts
View all network posts
14
What is the explanation of using pressure units (hPa) to express height when dealing with wind speeds?
12
Photo of sprites in a clear dark sky, is this possible?
7
How/where is randomness/stochasticity used in weather prediction
6
How can oceanic Rossby waves move from East to West?
5
Getting the derivatives of Legendre polynomials in Python

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.