uifit                package:Rcapture                R Documentation

_C_l_o_s_e_d _P_o_p_u_l_a_t_i_o_n _M_o_d_e_l_s _F_i_t _S_t_a_t_i_s_t_i_c_s _C_o_n_c_e_r_n_i_n_g _t_h_e _u_i

_D_e_s_c_r_i_p_t_i_o_n:

     This function produces fit statistics concerning the ui, i.e. the
     numbers of first captures on each capture occasion, for closed
     population models. It also forecasts, for some models, the number
     of additional units that would be captured if the experiment was
     continued for five more occasions.

_U_s_a_g_e:

     uifit(x.closedp)

_A_r_g_u_m_e_n_t_s:

x.closedp: An object produced by the 'closedp' function. 

_V_a_l_u_e:

predicted : The observed and predicted values of the ui frequencies, i
          = 1,...,t, for each model in 'closedp' . For models M0, Mh
          Poisson2, Mh Darroch and Mb, predicted values are also
          extrapolated for i = t+1,...,t+5.

fit.stat : Chi-square fit statistics for each model in 'closedp'
          (sum((observed - predicted)^2/predicted)).

day.first.capt : The mean and variance of the day of first capture,
          calculated with the observed and predicted ui, for each model
          in 'closedp'. 

_A_u_t_h_o_r(_s):

     Sophie Baillargeon sbaillar@mat.ulaval.ca and Louis-Paul Rivest
     lpr@mat.ulaval.ca

_R_e_f_e_r_e_n_c_e_s:

     Baillargeon, S. and Rivest, L.P. (2007). The Rcapture package:
     Loglinear models for capture-recapture in R. _Journal of
     Statistical Software_, to appear (available online at <URL:
     http://www.jstatsoft.org/>).

_S_e_e _A_l_s_o:

     'closedp'

_E_x_a_m_p_l_e_s:

     data(mvole)
     period3<-mvole[,11:15]
     cp <- closedp(period3)
     uifit(cp)

