Exemplo n.º 1
0
def two_dim_wright_fisher_figure(N, m, mu=0.01, incentive_func=replicator):
    """
    Plot relative entropies and stationary distribution for the Wright-Fisher
    process.
    """

    n = len(m[0])
    fitness_landscape = linear_fitness_landscape(m)
    incentive = incentive_func(fitness_landscape)
    if not mu:
        mu = 1. / N

    edge_func = wright_fisher.multivariate_transitions(N,
                                                       incentive,
                                                       mu=mu,
                                                       num_types=n)
    states = list(simplex_generator(N, d=n - 1))
    s = stationary_distribution(edge_func, states=states, iterations=4 * N)
    s0 = expected_divergence(edge_func, states=states, q_d=0)
    s1 = expected_divergence(edge_func, states=states, q_d=1)

    # Set up plots
    gs = gridspec.GridSpec(2, 1)

    ax2 = pyplot.subplot(gs[0, 0])
    ax2.set_title("Relative Entropy")
    plot_dictionary(s0, ax=ax2)
    plot_dictionary(s1, ax=ax2)

    ax3 = pyplot.subplot(gs[1, 0])
    ax3.set_title("Stationary Distribution")
    plot_dictionary(s, ax=ax3)
    ax3.set_xlabel("Number of A individuals (i)")
Exemplo n.º 2
0
def two_dim_wright_fisher_figure(N, m, mu=0.01, incentive_func=replicator):
    """
    Plot relative entropies and stationary distribution for the Wright-Fisher
    process.
    """

    n = len(m[0])
    fitness_landscape = linear_fitness_landscape(m)
    incentive = incentive_func(fitness_landscape)
    if not mu:
        mu = 1./ N

    edge_func = wright_fisher.multivariate_transitions(N, incentive, mu=mu, num_types=n)
    states = list(simplex_generator(N, d=n-1))
    s = stationary_distribution(edge_func, states=states, iterations=4*N)
    s0 = expected_divergence(edge_func, states=states, q_d=0)
    s1 = expected_divergence(edge_func, states=states, q_d=1)

    # Set up plots
    gs = gridspec.GridSpec(2, 1)

    ax2 = pyplot.subplot(gs[0, 0])
    ax2.set_title("Relative Entropy")
    plot_dictionary(s0, ax=ax2)
    plot_dictionary(s1, ax=ax2)

    ax3 = pyplot.subplot(gs[1, 0])
    ax3.set_title("Stationary Distribution")
    plot_dictionary(s, ax=ax3)
    ax3.set_xlabel("Number of A individuals (i)")
Exemplo n.º 3
0
def two_dim_transitions_figure(N, m, mu=0.01, incentive_func=replicator):
    """
    Plot transition entropies and stationary distributions.
    """

    n = len(m[0])
    fitness_landscape = linear_fitness_landscape(m)
    incentive = incentive_func(fitness_landscape)
    if not mu:
        mu = 1./ N
    edges = incentive_process.multivariate_transitions(N, incentive, num_types=n, mu=mu)

    s = stationary_distribution(edges, exact=True)
    d = edges_to_edge_dict(edges)

    # Set up plots
    gs = gridspec.GridSpec(3, 1)
    ax1 = pyplot.subplot(gs[0, 0])
    ax1.set_title("Transition Probabilities")
    ups, downs, _ = two_dim_transitions(edges)
    xs = range(0, N+1)
    ax1.plot(xs, ups)
    ax1.plot(xs, downs)

    ax2 = pyplot.subplot(gs[1, 0])
    ax2.set_title("Relative Entropy")
    divs1 = expected_divergence(edges)
    divs2 = expected_divergence(edges, q_d=0)
    plot_dictionary(divs1, ax=ax2)
    plot_dictionary(divs2, ax=ax2)

    ax3 = pyplot.subplot(gs[2, 0])
    ax3.set_title("Stationary Distribution")
    plot_dictionary(s, ax=ax3)
    ax3.set_xlabel("Number of A individuals (i)")
Exemplo n.º 4
0
def two_dim_transitions_figure(N, m, mu=0.01, incentive_func=replicator):
    """
    Plot transition entropies and stationary distributions.
    """

    n = len(m[0])
    fitness_landscape = linear_fitness_landscape(m)
    incentive = incentive_func(fitness_landscape)
    if not mu:
        mu = 1. / N
    edges = incentive_process.multivariate_transitions(N,
                                                       incentive,
                                                       num_types=n,
                                                       mu=mu)

    s = stationary_distribution(edges, exact=True)
    d = edges_to_edge_dict(edges)

    # Set up plots
    gs = gridspec.GridSpec(3, 1)
    ax1 = pyplot.subplot(gs[0, 0])
    ax1.set_title("Transition Probabilities")
    ups, downs, _ = two_dim_transitions(edges)
    xs = range(0, N + 1)
    ax1.plot(xs, ups)
    ax1.plot(xs, downs)

    ax2 = pyplot.subplot(gs[1, 0])
    ax2.set_title("Relative Entropy")
    divs1 = expected_divergence(edges)
    divs2 = expected_divergence(edges, q_d=0)
    plot_dictionary(divs1, ax=ax2)
    plot_dictionary(divs2, ax=ax2)

    ax3 = pyplot.subplot(gs[2, 0])
    ax3.set_title("Stationary Distribution")
    plot_dictionary(s, ax=ax3)
    ax3.set_xlabel("Number of A individuals (i)")