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author | Leo gautheron <gautheron@iv-cm-359.creatis.insa-lyon.fr> | 2017-04-20 15:05:53 +0200 |
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committer | Leo gautheron <gautheron@iv-cm-359.creatis.insa-lyon.fr> | 2017-04-20 15:05:53 +0200 |
commit | fb95157f867d749551fad9a4988eb3dd2813096e (patch) | |
tree | d2d6dacde5ecb66bbab5e4cc3f9e92dccea4852a /ot/gpu | |
parent | 9c5cc82b2e6f6dcd94a24a47f414c278c717ee7a (diff) |
more changes from feeback
in addition add the posibility to normalize the cost matrix through the function fit
Diffstat (limited to 'ot/gpu')
-rw-r--r-- | ot/gpu/__init__.py | 3 | ||||
-rw-r--r-- | ot/gpu/bregman.py | 4 | ||||
-rw-r--r-- | ot/gpu/da.py | 39 |
3 files changed, 26 insertions, 20 deletions
diff --git a/ot/gpu/__init__.py b/ot/gpu/__init__.py index 9319208..40b11c0 100644 --- a/ot/gpu/__init__.py +++ b/ot/gpu/__init__.py @@ -2,5 +2,6 @@ from . import bregman from . import da +from .bregman import sinkhorn -__all__ = ["bregman", "da"] +__all__ = ["bregman", "da", "sinkhorn"] diff --git a/ot/gpu/bregman.py b/ot/gpu/bregman.py index 4d4a8b7..f91f15f 100644 --- a/ot/gpu/bregman.py +++ b/ot/gpu/bregman.py @@ -4,10 +4,11 @@ Bregman projections for regularized OT with GPU """ import numpy as np +import cudamat def sinkhorn(a, b, M_GPU, reg, numItermax=1000, stopThr=1e-9, verbose=False, - log=False, cudamat=None): + log=False): # init data Nini = len(a) Nfin = len(b) @@ -74,7 +75,6 @@ def sinkhorn(a, b, M_GPU, reg, numItermax=1000, stopThr=1e-9, verbose=False, log['u'] = u_GPU.asarray() log['v'] = v_GPU.asarray() - # print('err=',err,' cpt=',cpt) K_GPU.mult_by_col(u_GPU, target=K_GPU) K_GPU.mult_by_row(v_GPU.transpose(), target=K_GPU) if log: diff --git a/ot/gpu/da.py b/ot/gpu/da.py index 4c583a7..0121e7b 100644 --- a/ot/gpu/da.py +++ b/ot/gpu/da.py @@ -7,9 +7,10 @@ import numpy as np from ..utils import unif from ..da import OTDA from .bregman import sinkhorn +import cudamat -def pairwiseEuclideanGPU(a, b, returnAsGPU=False, squared=False, cudamat=None): +def pairwiseEuclideanGPU(a, b, returnAsGPU=False, squared=False): # a is shape (n, f) and b shape (m, f). Return matrix c of shape (n, m). # First compute in c_GPU the squared euclidean distance. And return its # square root. At each cell [i,j] of c, we want to have @@ -45,9 +46,24 @@ def pairwiseEuclideanGPU(a, b, returnAsGPU=False, squared=False, cudamat=None): return c_GPU.asarray() -class OTDA_sinkhorn_GPU(OTDA): +class OTDA_GPU(OTDA): + def normalizeM(self, norm): + if norm == "median": + self.M_GPU.divide(float(np.median(self.M_GPU.asarray()))) + elif norm == "max": + self.M_GPU.divide(float(np.max(self.M_GPU.asarray()))) + elif norm == "log": + self.M_GPU.add(1) + cudamat.log(self.M_GPU) + elif norm == "loglog": + self.M_GPU.add(1) + cudamat.log(self.M_GPU) + self.M_GPU.add(1) + cudamat.log(self.M_GPU) + + +class OTDA_sinkhorn(OTDA_GPU): def fit(self, xs, xt, reg=1, ws=None, wt=None, norm=None, **kwargs): - import cudamat cudamat.init() xs = np.asarray(xs, dtype=np.float64) xt = np.asarray(xt, dtype=np.float64) @@ -64,18 +80,7 @@ class OTDA_sinkhorn_GPU(OTDA): self.wt = wt self.M_GPU = pairwiseEuclideanGPU(xs, xt, returnAsGPU=True, - squared=True, cudamat=cudamat) - - if norm == "median": - self.M_GPU.divide(float(np.median(self.M_GPU.asarray()))) - elif norm == "max": - self.M_GPU.divide(float(np.max(self.M_GPU.asarray()))) - elif norm == "log": - M = np.log(1 + self.M_GPU.asarray()) - self.M_GPU = cudamat.CUDAMatrix(M) - elif norm == "loglog": - M = np.log(1 + np.log(1 + self.M_GPU.asarray())) - self.M_GPU = cudamat.CUDAMatrix(M) - - self.G = sinkhorn(ws, wt, self.M_GPU, reg, cudamat=cudamat, **kwargs) + squared=True) + self.normalizeM(norm) + self.G = sinkhorn(ws, wt, self.M_GPU, reg, **kwargs) self.computed = True |