egttools.analytical.utils.get_pairwise_gradient_from_replicator_n_player¶
- get_pairwise_gradient_from_replicator_n_player(i, j, x, nb_strategies, group_size, payoffs, freq_array)[source]¶
Compute the gradient of selection for an n-player game using the replicator equation.
- Parameters:
i (int) – Index of the invader strategy.
j (int) – Index of the resident strategy.
x (int) – Number of invader individuals.
nb_strategies (int) – Number of strategies.
group_size (int) – Group size in the game.
payoffs (ndarray) – Payoff matrix shaped (nb_strategies, nb_group_configurations).
freq_array (ndarray) – Frequency vector for the population.
- Returns:
Gradient of selection between the two strategies.
- Return type: