scPublications          package:strucchange          R Documentation

_S_t_r_u_c_t_u_r_a_l _C_h_a_n_g_e _P_u_b_l_i_c_a_t_i_o_n_s

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

     Bibliographic information about papers related to structural
     change and changepoints published in 27 different econometrics and
     statistics  journals.

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

     data("scPublications")

_F_o_r_m_a_t:

     A data frame containing information on 835 structural change
     papers in 9 variables.

     _a_u_t_h_o_r character. Author(s) of the paper.

     _t_i_t_l_e character. Title of the paper.

     _j_o_u_r_n_a_l factor. In which journal was the paper published?

     _y_e_a_r numeric. Year of publication.

     _v_o_l_u_m_e numeric. Journal volume.

     _i_s_s_u_e character. Issue within the journal volume.

     _b_p_a_g_e numeric. Page on which the paper begins.

     _e_p_a_g_e numeric. Page on which the paper ends.

     _t_y_p_e factor. Is the journal an econometrics or statistics journal?

_D_e_t_a_i_l_s:

     The data set 'scPublications' includes bibliographic information
     about publications related to structural change and obtained from
     the 'ISI Web of Science'. The query was based on the 'Science
     Citation Index Expanded' and 'Social Sciences Citation Index' (for
     the full range of years available: 1900-2006 and 1956-2006,
     respectively). The 'Source Title' was restricted to the 27
     journals in the data frame and the 'Topic' to be one of the
     following: structural change, structural break, structural
     stability, structural instability, parameter instability,
     parameter stability, parameter constancy, change point,
     changepoint, change-point, breakpoint, break-point, break point,
     CUSUM, MOSUM. Additionally, the famous CUSUM paper of Brown,
     Durbin and Evans (1975) was added manually to 'scPublications'
     (because it did not match the query above).

_S_o_u_r_c_e:

     ISI Web of Science at <URL: http://www.isiknowledge.com/>. Queried
     by James Bullard.

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

     ## construct time series:
     ## number of sc publications in econometrics/statistics
     data("scPublications")

     ## select years from 1987 and
     ## `most important' journals
     pub <- scPublications
     pub <- subset(pub, year > 1986)
     tab1 <- table(pub$journal)
     nam1 <- names(tab1)[as.vector(tab1) > 9] ## at least 10 papers
     tab2 <- sapply(levels(pub$journal), function(x) min(subset(pub, journal == x)$year))
     nam2 <- names(tab2)[as.vector(tab2) < 1991] ## started at least in 1990
     nam <- nam1[nam1 %in% nam2]
     pub <- subset(pub, as.character(journal) %in% nam)
     pub$journal <- factor(pub$journal)
     pub_data <- pub

     ## generate time series
     pub <- with(pub, tapply(type, year, table))
     pub <- zoo(t(sapply(pub, cbind)), 1987:2006)
     colnames(pub) <- levels(pub_data$type)

     ## visualize
     plot(pub, ylim = c(0, 35))

