r4lineups Studio
Setup
Lineup Bias
Effective Size
Face Similarity
ROC & CAC
EIG & PPV
Tredoux & Naylor (2026)
Check or install Python dependencies for face similarity.
Check Python deps
Install Python deps
Run locally
Status
Available models
Available detectors
A lineup vector lists the position (1..k) each mock witness chose (e.g., 3,2,5,...). A lineup table lists counts per position 1..k (e.g., 2,5,1,0,3,1).
Input type
Vector
Table
Lineup input
Target position
Nominal lineup size (k)
Bootstrap R
Load example (nortje2012$lineup_1)
Summary reports the target-position proportion with bootstrap CI and the chance rate (1/k).
Summary
Bootstrap distribution
All proportions
Plot
Download CSV
Download Plot
Provide a lineup vector (positions chosen) or a table of counts per position.
Input type
Vector
Table
Lineup input
Nominal lineup size (k)
Effective size statistic
E (Tredoux, 1998)
E (Malpass, 1981)
Tredoux E' CI type
Bootstrap (percentile)
Normal (95%)
Bootstrap R
Load example (nortje2012$lineup_1)
Summary includes the selected effective size statistic with confidence intervals. Malpass uses bootstrap CIs.
Summary
Bootstrap distribution
Download CSV
Upload target face and a set of foils to compare against. Images are resized for speed; original filenames are preserved.
Target image
Browse...
Foil images
Browse...
Resize width (px)
Preview width (px)
Model
VGG-Face
Facenet
Facenet512
OpenFace
DeepFace
DeepID
ArcFace
Dlib
SFace
GhostFaceNet
Detector
retinaface
mtcnn
mediapipe
opencv
ssd
dlib
yolov8
centerface
skip
Check Python deps
Status
Lineup preview
Similarity table reports distance, similarity, and rank for each foil (lower distance/higher similarity = closer match).
Similarity table
Plot
Pairwise similarity matrix
Download CSV
Download Plot
Download Matrix
Upload CSV with target_present, identification, confidence. Example format is shown in the preview table on the right.
Data CSV
Browse...
Confidence bins (optional)
Optional: compare ROC by column
None
pAUC bootstrap R
Load example (lineup_example)
Data preview
Expected columns: target_present, identification, confidence.
Summary
ROC comparison (optional)
ROC plot
CAC plot
Full ROC plot
Download ROC/CAC data
Download ROC Plot
Download CAC Plot
Download Full ROC Plot
Uses the same data format as ROC/CAC.
Data CSV
Browse...
Confidence bins (optional)
Load example (lineup_example)
Summary
EIG response data
EIG plots
PPV range
Download EIG data
Download PPV data
Download EIG Plot
Download PPV Plot