def generate_Sasl_vrep(K, i, num_type='fraction'):
"""Generate the V-representation of avoiding S-sure loss
See Equation (9) in my ISIPTA '13 paper “Characterizing coherence,
correcting incoherence”. Here, S has negative component at index `i`.
"""
deg_prevs = transpose(K)
neg_dirs = generate_Sasl_neg_dirs(len(K), i)
return make_vrep(deg_prevs, neg_dirs, num_type)
def generate_asl_vrep(K, num_type='fraction'):
"""Generate the V-representation of avoiding sure loss
See Equation (5) in my ISIPTA '13 paper “Characterizing coherence,
correcting incoherence”.
"""
deg_prevs = transpose(K)
neg_dirs = diagonallists([-1] * len(K))
return make_vrep(deg_prevs, neg_dirs, num_type)
