selectiverank 0.0.1

Implements Selective Preference Aggregation (SPA), a rank aggregation framework that constructs collective rankings while limiting the fraction of individual preferences that can be overruled.

SPA

Selective Preference Aggregation

├── data         # processed datasets                `data_dir`
├── spa          # source code                       `pkg_dir`
├── scripts      # scripts that run source code                            
├── results      # results                           `results_dir`
├── reporting    # source code for reporting
├── reports      # reports                           `reports_dir`          			

1. Add Your Dataset

1. Location: Create a subfolder for your dataset within the data/ directory (e.g., data/movie/).

2. File Naming: Place your data file(s) in this subfolder, named according to the pattern: {dataset_name}_{type}.csv (e.g., movie_ratings.csv, movie_pairwise.csv).

3. Data Format: Ensure your CSV file matches one of the following structures based on the {type} in your filename:

   • For ranking or rating types:

     • Headers (First Row): User ids.
     • First Column: Item ids.
     • Cell A1 (Top-Left): Must contain the exact text item_name.
     • Data Cells: Preference values (rating or rank) given by the user (column) for the item (row)

     Example (movie_ratings.csv):

     item_name,user101,user102,user103
     ItemA,5,4,3
     ItemB,3,4,5
     ItemC,2,1,4
     ItemD,1,2,2
     

   • For pairwise comparison types:

     • Headers (First Row): Must be exactly judge_id, item_id_1, item_id_2, pref.
     • Rows: Each row represents a single comparison made by a judge_id.
     • pref Column: Indicates the user preference:
       • 1: item_id_1 is preferred over item_id_2.
       • -1: item_id_2 is preferred over item_id_1.
       • 0: Represents a tie or indifference.

     Example (movie_pairwise.csv):

     judge_id,item_id_1,item_id_2,pref
     judgeA,itemX,itemY,1
     judgeA,itemY,itemZ,-1
     judgeB,itemX,itemY,0
     judgeB,itemX,itemZ,1
     judgeC,itemY,itemZ,1
     

2. Configure and Run Experiments

1. Update Dataset Creation Script:

   • Open the file scripts/create_datasets.py.
   • Find the settings dictionary.
   • Add the {dataset_name} string (e.g., "movie") from Step 1 to the data_names list.

     settings = {
         "data_names": ["movie"], 
         ...
     }
     

   • Execute the script

2. Update Main Experiment Script:

   • Open the file scripts/dev_spa.py.
   • Find the settings dictionary within this script.
   • Add the same {dataset_name} string to the data_names list (or similar configuration entry) in this file as well.

     settings = {
         "data_names": ["movie"], # Added "movie"
         "seed": 2338,
         ...
     }
     

   • Execute dev_spa.py

3. Generating and Viewing Results

1. Aggregate Base Results:

   • Configure settings within scripts/aggregate_base_results.py.
   • Execute the script .

2. Combine All Results:

   • Configure settings within scripts/combine_all_results.py.
   • Execute the script.

3. Locate Output CSV:

   • The final, combined results are saved as a CSV file within the results/ directory (results_dir).
   • The filename includes a timestamp for uniqueness.

4. (Optional) Generate LaTeX Table:

   • Modify and run the R script located at scripts/create_big_table.R. Update the script to point to the correct input CSV file from the previous step.
   • This will output a .tex file.

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