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Col split #2

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Col split #2

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1ce0399
col split handling for small jets
Nov 10, 2021
c7f69ce
removed my extra changes to jet_augs
rmastand Dec 20, 2021
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20 changes: 12 additions & 8 deletions scripts/modules/jet_augs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
import torch.nn.functional as F


def translate_jets( batch, width=1.0 ):
def translate_jets( batch, width=0.5 ):
'''
Input: batch of jets, shape (batchsize, 3, n_constit)
dim 1 ordering: (pT, eta, phi)
Expand Down Expand Up @@ -54,14 +54,14 @@ def normalise_pts( batch ):
batch_norm[:,0,:] = np.nan_to_num(batch_norm[:,0,:]/np.sum(batch_norm[:,0,:], axis=1)[:, np.newaxis], posinf = 0.0, neginf = 0.0 )
return batch_norm

def rescale_pts( batch ):
def rescale_pts( batch):
'''
Input: batch of jets, shape (batchsize, 3, n_constit)
dim 1 ordering: (pT, eta, phi)
Output: batch of pT-rescaled jets, each constituent pT is rescaled by 600, same shape as input
'''
batch_rscl = batch.copy()
batch_rscl[:,0,:] = np.nan_to_num(batch_rscl[:,0,:]/600, posinf = 0.0, neginf = 0.0 )
batch_rscl[:,0,:] = np.nan_to_num(batch_rscl[:,0,:]/600., posinf = 0.0, neginf = 0.0 )
return batch_rscl

def crop_jets( batch, nc ):
Expand Down Expand Up @@ -96,13 +96,17 @@ def collinear_fill_jets( batch ):
nc = batch.shape[2]
nzs = np.array( [ np.where( batch[:,0,:][i]>0.0)[0].shape[0] for i in range(len(batch)) ] )
for k in range(len(batch)):
nzs1 = np.max( [ nzs[k], int(nc/2) ] )
zs1 = int(nc-nzs1)
els = np.random.choice( np.linspace(0,nzs1-1,nzs1), size=zs1, replace=False )
rs = np.random.uniform( size=zs1 )
for j in range(zs1):
zs1 = int(nc-nzs[k])
nfill = np.min( [ zs1, nzs[k] ] )
els = np.random.choice( np.linspace(0,nzs[k]-1,nzs[k]), size=nfill, replace=False )
rs = np.random.uniform( size=nfill )
for j in range(nfill):
batchb[k,0,int(els[j])] = rs[j]*batch[k,0,int(els[j])]
batchb[k,0,int(nzs[k]+j)] = (1-rs[j])*batch[k,0,int(els[j])]
batchb[k,1,int(nzs[k]+j)] = batch[k,1,int(els[j])]
batchb[k,2,int(nzs[k]+j)] = batch[k,2,int(els[j])]

return batchb