Carolina Cuesta-Lazaro
Brown Bag Lunch Talk
Collaborators: Cheng-Zong Ruan, Yosuke Kobayashi, Alexander Eggemeier, Pauline Zarrouk, Sownak Bose, Takahiro Nishimichi, Baojiu Li, Carlton Baugh
Medical Imaging
Epidemiology: Agent Based simulations
OBSERVED
SIMULATED
Cosmology
Simulations
HPC
Science question
Statistics ML
GROWTH
- GRAVITY
- FIFTH FORCE
+ EXPANSION
Credit: Cartoon depicting Willem de Sitter as Lambda from Algemeen Handelsblad (1930).
Credit: https://arxiv.org/abs/1912.09383
Cosmology =
Main Assumptions
Cosmology =
Galaxy =
?
N-body simulations
Likelihood evaluations
Neural Net
Analytical
Cosmology
Centrals
Satellites
How much information are we throwing away by summarising in two piont functions?
How much information are we throwing away by summarising the data?
Clusters
Voids
0.08
0.05
0.02
0.7
0.4
PRELIMINARY
0.85
0.80
1.1
1.0
0.9
3.5
0.9
3.0
0.33
0.08
0.28
0.03
0.07
0.4
0.7
0.8
0.86
0.87
1.06
0.87
3.0
3.5
Input
x
Neural network
f
Representation
(Summary statistic)
r = f(x)
Output
o = g(r)
Increased interpretability through structured inputs
Modelling cross-correlations