tachim

Keybase proof

I hereby claim:

• I am tachim on github.
• I am 10 (https://keybase.io/10) on keybase.
• I have a public key whose fingerprint is B634 EA44 D87C 6992 A07E 2EFF 125C 4B84 7BAA C5B2

To claim this, I am signing this object:

tachim

def soft_threshold(x, t):
  x = x.copy() 
  x[np.where(np.abs(x) < t)] = 0 x[np.where(x > 0)] -= t 
  x[np.where(x < 0)] += t 
  return x

tachim

def render_vector_sparsity(final_z):
    zb = final_z.copy()
    zb[zb != 0] = 1
    wb = w.copy()
    wb[wb != 0] = 1
    plt.imshow(((zb != wb).reshape((50, 100))))
    print (zb != wb).sum(), 'different'

tachim

M = 1500
N = 5000
RHO = 1
LAMBDA = 20
w = np.zeros((N,))
for i in xrange(N):
    if np.random.random() < 0.1:
        w[i] = np.random.random() * 10
A = np.random.standard_normal((M, N))
b = A.dot(w)