Update readme for 2026 tag

README.Rmd

@@ -31,6 +31,7 @@ This repository contains code, data, and documentation for the Cook County Asses
 | 2022        | North    | County-wide LightGBM model                  | R (Tidyverse / Tidymodels) | [Link](https://github.com/ccao-data/model-res-avm/tree/2022-assessment-year)                            |
 | 2023        | South    | County-wide LightGBM model                  | R (Tidyverse / Tidymodels) | [Link](https://github.com/ccao-data/model-res-avm/tree/2023-assessment-year)                            |
 | 2024        | City     | County-wide LightGBM model                  | R (Tidyverse / Tidymodels) | [Link](https://github.com/ccao-data/model-res-avm/tree/2024-assessment-year)                            |
+| 2025        | North    | County-wide LightGBM model                  | R (Tidyverse / Tidymodels) | [Link](https://github.com/ccao-data/model-res-avm/tree/2025-assessment-year)                            |
 
 # Model Overview
 
@@ -357,7 +358,7 @@ param_tbl_fmt <- param_tbl %>%
     na.rm = TRUE
   ) %>%
   mutate(description = replace_na(description, "")) %>%
-  arrange(category)
+  arrange(category, variable_name)
 
 # Write machine-readable version of the table to file
 param_tbl_fmt %>%
@@ -564,6 +565,12 @@ This repository represents a significant departure from the old [residential mod
 * Modified features: distance to road now uses Illinois Department of Transportation street data instead of OpenStreetMap.
 * Added _lots_ of additional bug fixes and minor improvements.
 
+### [`assessment-year-2026`](https://github.com/ccao-data/model-res-avm/tree/2026-assessment-year)
+
+* Changed how complex IDs are generated for class 210 and 295 town/rowhomes. The new method removes grouping on class since
+the ID generation already fuzzy matches on year built which is the only difference between the classes.
+* Greatly expanded analyst hand-review into the sales validation process, augmenting the preexisting algorithmic checks. Analyst decisions supercede any conflicting algorithmic outcomes now.
+
 # Ongoing Issues
 
 The CCAO faces a number of ongoing issues which make modeling difficult. Some of these issues are in the process of being solved; others are less tractable. We list them here for the sake of transparency and to provide a sense of the challenges we face.
@@ -863,6 +870,15 @@ The data issue caused some sales to be omitted from the `2024-02-06-relaxed-tris
 - [land_nbhd_rate_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2025/land_nbhd_rate_data.parquet)
 - [training_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2025/training_data.parquet)
 
+#### 2026
+
+- [assessment_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2026/assessment_data.parquet)
+- [char_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2026/char_data.parquet)
+- [complex_id_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2026/complex_id_data.parquet)
+- [hie_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2026/hie_data.parquet)
+- [land_nbhd_rate_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2026/land_nbhd_rate_data.parquet)
+- [training_data.parquet](https://ccao-data-public-us-east-1.s3.amazonaws.com/models/inputs/res/2026/training_data.parquet)
+
 For other data from the CCAO, please visit the [Cook County Data Portal](https://datacatalog.cookcountyil.gov/).
 
 ## System Requirements