global model bug fix for multistep horizon forecasting

.github/workflows/R-CMD-check.yaml

@@ -51,7 +51,7 @@ jobs:
 
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
-          extra-packages: any::rcmdcheck, vip=?ignore-before-r=4.1.0, Boruta=?ignore-before-r=4.1.0
+          extra-packages: any::rcmdcheck, vip=?ignore-before-r=4.1.0, Boruta=?ignore-before-r=4.1.0, corrr=?ignore-before-r=4.1.0
           needs: check
 
       - uses: r-lib/actions/check-r-package@v2

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: finnts
 Title: Microsoft Finance Time Series Forecasting Framework
-Version: 0.4.0.9003
+Version: 0.4.0.9004
 Authors@R: 
     c(person(given = "Mike",
            family = "Tokic",

NEWS.md

@@ -1,8 +1,9 @@
-# finnts 0.4.0.9003 (DEVELOPMENT VERSION)
+# finnts 0.4.0.9004 (DEVELOPMENT VERSION)
 
 ## Improvements
 
 -   Added support for hierarchical forecasting with external regressors
+-   Allow global models for hierarchical forecasts
 -   Multistep horizon forecasts for R1 recipe, listed as `multistep_horizon` within `prep_data()` 
 
 ## Bug Fixes

R/multistep_cubist.R

@@ -439,6 +439,13 @@ predict.cubist_multistep_fit_impl <- function(object, new_data, ...) {
 #' @export
 cubist_multistep_predict_impl <- function(object, new_data, ...) {
 
+  # Date Mapping Table
+  date_tbl <- new_data %>%
+    dplyr::select(Date, Date_index.num) %>%
+    dplyr::distinct() %>%
+    dplyr::arrange(Date) %>%
+    dplyr::mutate(Run_Number = dplyr::row_number())
+
   # PREPARE INPUTS
   xreg_recipe <- object$extras$xreg_recipe
   h_horizon <- nrow(new_data)
@@ -447,14 +454,16 @@ cubist_multistep_predict_impl <- function(object, new_data, ...) {
   xreg_tbl <- modeltime::bake_xreg_recipe(xreg_recipe,
     new_data,
     format = "tbl"
-  )
+  ) %>%
+    dplyr::left_join(date_tbl, by = "Date_index.num") %>%
+    dplyr::mutate(Row_Num = dplyr::row_number())
 
   # PREDICTIONS
-  final_prediction <- c()
+  final_prediction <- tibble::tibble()
   start_val <- 1
 
   for (model_name in names(object$models)) {
-    if (start_val > nrow(xreg_tbl)) {
+    if (start_val > nrow(date_tbl)) {
       break
     }
 
@@ -463,17 +472,28 @@ cubist_multistep_predict_impl <- function(object, new_data, ...) {
     cubist_model <- object$models[[model_name]]
 
     xreg_tbl_final <- xreg_tbl %>%
-      dplyr::slice(start_val:lag_number)
+      dplyr::filter(
+        Run_Number >= start_val,
+        Run_Number <= lag_number
+      )
 
     if (!is.null(xreg_tbl)) {
       preds_cubist <- predict(cubist_model, xreg_tbl_final)
     } else {
       preds_cubist <- rep(0, h_horizon)
     }
 
+    preds_cubist <- tibble::tibble(.pred = preds_cubist) %>%
+      dplyr::mutate(Row_Num = xreg_tbl_final$Row_Num)
+
     start_val <- as.numeric(lag_number) + 1
-    final_prediction <- c(final_prediction, preds_cubist)
+    final_prediction <- rbind(final_prediction, preds_cubist)
   }
 
+  # Ensure it's sorted correctly for global models
+  final_prediction <- final_prediction %>%
+    dplyr::arrange(Row_Num) %>%
+    dplyr::pull(.pred)
+
   return(final_prediction)
 }

R/multistep_glmnet.R

@@ -427,6 +427,13 @@ predict.glmnet_multistep_fit_impl <- function(object, new_data, ...) {
 #' @export
 glmnet_multistep_predict_impl <- function(object, new_data, ...) {
 
+  # Date Mapping Table
+  date_tbl <- new_data %>%
+    dplyr::select(Date, Date_index.num) %>%
+    dplyr::distinct() %>%
+    dplyr::arrange(Date) %>%
+    dplyr::mutate(Run_Number = dplyr::row_number())
+
   # PREPARE INPUTS
   xreg_recipe <- object$extras$xreg_recipe
   h_horizon <- nrow(new_data)
@@ -435,14 +442,16 @@ glmnet_multistep_predict_impl <- function(object, new_data, ...) {
   xreg_tbl <- modeltime::bake_xreg_recipe(xreg_recipe,
     new_data,
     format = "tbl"
-  )
+  ) %>%
+    dplyr::left_join(date_tbl, by = "Date_index.num") %>%
+    dplyr::mutate(Row_Num = dplyr::row_number())
 
   # PREDICTIONS
   final_prediction <- tibble::tibble()
   start_val <- 1
 
   for (model_name in names(object$models)) {
-    if (start_val > nrow(xreg_tbl)) {
+    if (start_val > nrow(date_tbl)) {
       break
     }
 
@@ -451,17 +460,28 @@ glmnet_multistep_predict_impl <- function(object, new_data, ...) {
     glmnet_model <- object$models[[model_name]]
 
     xreg_tbl_final <- xreg_tbl %>%
-      dplyr::slice(start_val:lag_number)
+      dplyr::filter(
+        Run_Number >= start_val,
+        Run_Number <= lag_number
+      )
 
     if (!is.null(xreg_tbl)) {
       preds_glmnet <- predict(glmnet_model, xreg_tbl_final)
     } else {
       preds_glmnet <- rep(0, h_horizon)
     }
 
+    preds_glmnet <- preds_glmnet %>%
+      dplyr::mutate(Row_Num = xreg_tbl_final$Row_Num)
+
     start_val <- as.numeric(lag_number) + 1
     final_prediction <- rbind(final_prediction, preds_glmnet)
   }
 
+  # Ensure it's sorted correctly for global models
+  final_prediction <- final_prediction %>%
+    dplyr::arrange(Row_Num) %>%
+    dplyr::select(.pred)
+
   return(final_prediction)
 }

R/multistep_mars.R

@@ -450,6 +450,13 @@ predict.mars_multistep_fit_impl <- function(object, new_data, ...) {
 #' @export
 mars_multistep_predict_impl <- function(object, new_data, ...) {
 
+  # Date Mapping Table
+  date_tbl <- new_data %>%
+    dplyr::select(Date, Date_index.num) %>%
+    dplyr::distinct() %>%
+    dplyr::arrange(Date) %>%
+    dplyr::mutate(Run_Number = dplyr::row_number())
+
   # PREPARE INPUTS
   xreg_recipe <- object$extras$xreg_recipe
   h_horizon <- nrow(new_data)
@@ -458,14 +465,16 @@ mars_multistep_predict_impl <- function(object, new_data, ...) {
   xreg_tbl <- modeltime::bake_xreg_recipe(xreg_recipe,
     new_data,
     format = "tbl"
-  )
+  ) %>%
+    dplyr::left_join(date_tbl, by = "Date_index.num") %>%
+    dplyr::mutate(Row_Num = dplyr::row_number())
 
   # PREDICTIONS
   final_prediction <- tibble::tibble()
   start_val <- 1
 
   for (model_name in names(object$models)) {
-    if (start_val > nrow(xreg_tbl)) {
+    if (start_val > nrow(date_tbl)) {
       break
     }
 
@@ -474,17 +483,28 @@ mars_multistep_predict_impl <- function(object, new_data, ...) {
     mars_model <- object$models[[model_name]]
 
     xreg_tbl_final <- xreg_tbl %>%
-      dplyr::slice(start_val:lag_number)
+      dplyr::filter(
+        Run_Number >= start_val,
+        Run_Number <= lag_number
+      )
 
     if (!is.null(xreg_tbl)) {
       preds_mars <- predict(mars_model, xreg_tbl_final)
     } else {
       preds_mars <- rep(0, h_horizon)
     }
 
+    preds_mars <- preds_mars %>%
+      dplyr::mutate(Row_Num = xreg_tbl_final$Row_Num)
+
     start_val <- as.numeric(lag_number) + 1
     final_prediction <- rbind(final_prediction, preds_mars)
   }
 
+  # Ensure it's sorted correctly for global models
+  final_prediction <- final_prediction %>%
+    dplyr::arrange(Row_Num) %>%
+    dplyr::select(.pred)
+
   return(final_prediction)
 }

R/multistep_svm_poly.R

@@ -476,6 +476,13 @@ predict.svm_poly_multistep_fit_impl <- function(object, new_data, ...) {
 #' @export
 svm_poly_multistep_predict_impl <- function(object, new_data, ...) {
 
+  # Date Mapping Table
+  date_tbl <- new_data %>%
+    dplyr::select(Date, Date_index.num) %>%
+    dplyr::distinct() %>%
+    dplyr::arrange(Date) %>%
+    dplyr::mutate(Run_Number = dplyr::row_number())
+
   # PREPARE INPUTS
   xreg_recipe <- object$extras$xreg_recipe
   h_horizon <- nrow(new_data)
@@ -484,14 +491,16 @@ svm_poly_multistep_predict_impl <- function(object, new_data, ...) {
   xreg_tbl <- modeltime::bake_xreg_recipe(xreg_recipe,
     new_data,
     format = "tbl"
-  )
+  ) %>%
+    dplyr::left_join(date_tbl, by = "Date_index.num") %>%
+    dplyr::mutate(Row_Num = dplyr::row_number())
 
   # PREDICTIONS
   final_prediction <- tibble::tibble()
   start_val <- 1
 
   for (model_name in names(object$models)) {
-    if (start_val > nrow(xreg_tbl)) {
+    if (start_val > nrow(date_tbl)) {
       break
     }
 
@@ -500,17 +509,28 @@ svm_poly_multistep_predict_impl <- function(object, new_data, ...) {
     svm_poly_model <- object$models[[model_name]]
 
     xreg_tbl_final <- xreg_tbl %>%
-      dplyr::slice(start_val:lag_number)
+      dplyr::filter(
+        Run_Number >= start_val,
+        Run_Number <= lag_number
+      )
 
     if (!is.null(xreg_tbl)) {
       preds_svm_poly <- predict(svm_poly_model, xreg_tbl_final)
     } else {
       preds_svm_poly <- rep(0, h_horizon)
     }
 
+    preds_svm_poly <- preds_svm_poly %>%
+      dplyr::mutate(Row_Num = xreg_tbl_final$Row_Num)
+
     start_val <- as.numeric(lag_number) + 1
     final_prediction <- rbind(final_prediction, preds_svm_poly)
   }
 
+  # Ensure it's sorted correctly for global models
+  final_prediction <- final_prediction %>%
+    dplyr::arrange(Row_Num) %>%
+    dplyr::select(.pred)
+
   return(final_prediction)
 }

R/multistep_svm_rbf.R

@@ -456,6 +456,13 @@ predict.svm_rbf_multistep_fit_impl <- function(object, new_data, ...) {
 #' @export
 svm_rbf_multistep_predict_impl <- function(object, new_data, ...) {
 
+  # Date Mapping Table
+  date_tbl <- new_data %>%
+    dplyr::select(Date, Date_index.num) %>%
+    dplyr::distinct() %>%
+    dplyr::arrange(Date) %>%
+    dplyr::mutate(Run_Number = dplyr::row_number())
+
   # PREPARE INPUTS
   xreg_recipe <- object$extras$xreg_recipe
   h_horizon <- nrow(new_data)
@@ -464,14 +471,16 @@ svm_rbf_multistep_predict_impl <- function(object, new_data, ...) {
   xreg_tbl <- modeltime::bake_xreg_recipe(xreg_recipe,
     new_data,
     format = "tbl"
-  )
+  ) %>%
+    dplyr::left_join(date_tbl, by = "Date_index.num") %>%
+    dplyr::mutate(Row_Num = dplyr::row_number())
 
   # PREDICTIONS
   final_prediction <- tibble::tibble()
   start_val <- 1
 
   for (model_name in names(object$models)) {
-    if (start_val > nrow(xreg_tbl)) {
+    if (start_val > nrow(date_tbl)) {
       break
     }
 
@@ -480,17 +489,28 @@ svm_rbf_multistep_predict_impl <- function(object, new_data, ...) {
     svm_rbf_model <- object$models[[model_name]]
 
     xreg_tbl_final <- xreg_tbl %>%
-      dplyr::slice(start_val:lag_number)
+      dplyr::filter(
+        Run_Number >= start_val,
+        Run_Number <= lag_number
+      )
 
     if (!is.null(xreg_tbl)) {
       preds_svm_rbf <- predict(svm_rbf_model, xreg_tbl_final)
     } else {
       preds_svm_rbf <- rep(0, h_horizon)
     }
 
+    preds_svm_rbf <- preds_svm_rbf %>%
+      dplyr::mutate(Row_Num = xreg_tbl_final$Row_Num)
+
     start_val <- as.numeric(lag_number) + 1
     final_prediction <- rbind(final_prediction, preds_svm_rbf)
   }
 
+  # Ensure it's sorted correctly for global models
+  final_prediction <- final_prediction %>%
+    dplyr::arrange(Row_Num) %>%
+    dplyr::select(.pred)
+
   return(final_prediction)
 }