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feat: production web app — React/Vite frontend + FastAPI backend with Render/Vercel deployment
b72652e FairValue Transfer Cap Estimator: Data Schema
This document outlines the CSV structure required for training the XGBoost regression model.
Target Variable
Transfer_Fee_2024_GBP: The inflation-adjusted transfer fee in GBP (Target variable to predict).
Master Dataset (train.csv / test.csv)
| Column Name | Data Type | Description |
|---|---|---|
Player_ID |
Integer | Unique identifier for the player. |
Name |
String | Player's full name. |
Position |
Categorical | Primary position (e.g., CB, CM, CF). Will be One-Hot Encoded. |
Age |
Integer | Player's age at the time of the transfer. |
Nationality_Tier |
Integer | Grouped tier (Tier 1 = EU5/SA, Tier 2 = Rest of World) influencing commercial value. |
Current_League |
Categorical | The league the player is transferring from, mapped to a League Strength Index via UEFA coefficients. |
Contract_Years_Left |
Float | Critical risk factor. Years remaining on current contract (1 to 5). Heavily influences the Option Value. |
Minutes_2023 |
Integer | Minutes played in the immediate prior season. |
Minutes_2022 |
Integer | Minutes played in the season before the immediate prior season. |
xG_90_2023 |
Float | Key performance metric. Expected goals per 90 minutes. |
xG_90_2022 |
Float | Expected goals per 90 minutes in the previous season. |
xA_90_2023 |
Float | Expected assists per 90 minutes. |
xA_90_2022 |
Float | Expected assists per 90 minutes in the previous season. |
Progressive_Carries_90 |
Float | Progressive carries per 90 minutes, capturing ball-progression skill. |
Injury_Days_Total_24m |
Integer | Critical risk factor. Total days injured in the 24 months preceding the transfer. Impacts the "Risk Score" and final Hard Cap. |
Transfer_Date |
Date | Date of the transfer, used to determine inflation adjustment multiplier. |
Example Row
Player_ID,Name,Position,Age,Nationality_Tier,Current_League,Contract_Years_Left,Minutes_2023,Minutes_2022,xG_90_2023,xG_90_2022,xA_90_2023,xA_90_2022,Progressive_Carries_90,Injury_Days_Total_24m,Transfer_Fee_2024_GBP,Transfer_Date
1001,Jude Bellingham,CM,19,1,La_Liga,4,2500,3000,0.45,0.38,0.22,4.2,5,103000000,2023-06-15
1002,Kai Havertz,CF,24,1,Premier_League,3,2000,2200,0.28,0.25,0.15,3.1,10,65000000,2023-07-01