def test_solver_2(self):
# Frank-Wolfe from Algorithm 3 of Jaggi's paper (without aprox.)
# already good improvement
print 'test solver_2'
graph = np.loadtxt('data/braess_net.csv', delimiter=',', skiprows=1)
demand = np.loadtxt('data/braess_od.csv', delimiter=',', skiprows=1)
demand=np.reshape(demand, (1,3))
f = solver_2(graph, demand, max_iter=100)
self.check(f, np.array([1.,1.,0.,1.,1.]), 1e-3)
# modify demand
demand[0,2] = 0.5
f = solver_2(graph, demand)
self.check(f, np.array([.5,.0,.5,.0,.5]), 1e-8)
def test_solver_sioux_falls_2(self):
print 'test Frank-Wolfe on Sioux Falls 2'
graph = np.loadtxt('data/SiouxFalls_net.csv', delimiter=',', skiprows=1)
demand = np.loadtxt('data/SiouxFalls_od.csv', delimiter=',', skiprows=1)
demand[:,2] = demand[:,2] / 4000
f = solver_2(graph, demand, max_iter=1000, q=100)
results = np.loadtxt('data/SiouxFalls_results.csv')
self.check(f*4000, results, 1e-3)
def test_solver_3(self):
print 'test_solver_3'
graph = np.loadtxt('data/braess_net.csv', delimiter=',', skiprows=1)
demand = np.loadtxt('data/braess_od.csv', delimiter=',', skiprows=1)
demand=np.reshape(demand, (1,3))
f = solver_3(graph, demand, max_iter=100)
#print f
self.check(f, np.array([1.,1.,0.,1.,1.]), 1e-1)
# modify demand
demand[0,2] = 0.5
f = solver_2(graph, demand)
self.check(f, np.array([.5,.0,.5,.0,.5]), 1e-8)
def braess_parametric_study():
'''
parametric study of heterogeneous game on the Braess network
'''
g1, g2, d1, d2 = braess_heterogeneous(.0, 1.5)
fs = solver_2(g1, d1, display=1)
print '.0, 1.5'
np.savetxt('data/braess/test_1.csv', fs, delimiter=',')
g1, g2, d1, d2 = braess_heterogeneous(.5, 1.)
fs = gauss_seidel([g1, g2], [d1, d2], solver_2, display=1)
print '.5, 1.'
np.savetxt('data/braess/test_2.csv', fs, delimiter=',')
g1, g2, d1, d2 = braess_heterogeneous(.75, .75)
fs = gauss_seidel([g1, g2], [d1, d2], solver_2, display=1)
print '.75, .75'
np.savetxt('data/braess/test_3.csv', fs, delimiter=',')
g1, g2, d1, d2 = braess_heterogeneous(1., .5)
fs = gauss_seidel([g1, g2], [d1, d2], solver_2, display=1)
print '1., .5'
np.savetxt('data/braess/test_4.csv', fs, delimiter=',')
g1, g2, d1, d2 = braess_heterogeneous(1.5, .0)
fs = solver_2(g2, d2, display=1)
print '1.5, .0'
np.savetxt('data/braess/test_5.csv', fs, delimiter=',')
