diff --git a/classifier/configs/phase4/_base.json b/classifier/configs/phase4/_base.json
new file mode 100644
index 0000000..5e3eb83
--- /dev/null
+++ b/classifier/configs/phase4/_base.json
@@ -0,0 +1,7 @@
+{
+  "pretrained": true,
+  "epochs": 15,
+  "image_size": 224,
+  "augment": false,
+  "data_dir": "cropped/classifier"
+}
diff --git a/classifier/configs/phase4/p4a_convnext_tiny_100pct.json b/classifier/configs/phase4/p4a_convnext_tiny_100pct.json
new file mode 100644
index 0000000..e841de4
--- /dev/null
+++ b/classifier/configs/phase4/p4a_convnext_tiny_100pct.json
@@ -0,0 +1,6 @@
+{
+  "extends": "_base.json",
+  "run_name": "p4a_convnext_tiny_100pct",
+  "backbone": "convnext_tiny",
+  "subsample": 1.0
+}
diff --git a/classifier/configs/phase4/p4a_convnext_tiny_50pct.json b/classifier/configs/phase4/p4a_convnext_tiny_50pct.json
new file mode 100644
index 0000000..f716886
--- /dev/null
+++ b/classifier/configs/phase4/p4a_convnext_tiny_50pct.json
@@ -0,0 +1,6 @@
+{
+  "extends": "_base.json",
+  "run_name": "p4a_convnext_tiny_50pct",
+  "backbone": "convnext_tiny",
+  "subsample": 0.5
+}
diff --git a/classifier/configs/phase4/p4a_efficientnet_b0_100pct.json b/classifier/configs/phase4/p4a_efficientnet_b0_100pct.json
new file mode 100644
index 0000000..5a5c3b1
--- /dev/null
+++ b/classifier/configs/phase4/p4a_efficientnet_b0_100pct.json
@@ -0,0 +1,6 @@
+{
+  "extends": "_base.json",
+  "run_name": "p4a_efficientnet_b0_100pct",
+  "backbone": "efficientnet_b0",
+  "subsample": 1.0
+}
diff --git a/classifier/configs/phase4/p4a_efficientnet_b0_50pct.json b/classifier/configs/phase4/p4a_efficientnet_b0_50pct.json
new file mode 100644
index 0000000..214daf4
--- /dev/null
+++ b/classifier/configs/phase4/p4a_efficientnet_b0_50pct.json
@@ -0,0 +1,6 @@
+{
+  "extends": "_base.json",
+  "run_name": "p4a_efficientnet_b0_50pct",
+  "backbone": "efficientnet_b0",
+  "subsample": 0.5
+}
diff --git a/classifier/configs/phase4/p4a_resnet50_100pct.json b/classifier/configs/phase4/p4a_resnet50_100pct.json
new file mode 100644
index 0000000..b4824f1
--- /dev/null
+++ b/classifier/configs/phase4/p4a_resnet50_100pct.json
@@ -0,0 +1,6 @@
+{
+  "extends": "_base.json",
+  "run_name": "p4a_resnet50_100pct",
+  "backbone": "resnet50",
+  "subsample": 1.0
+}
diff --git a/classifier/configs/phase4/p4a_resnet50_50pct.json b/classifier/configs/phase4/p4a_resnet50_50pct.json
new file mode 100644
index 0000000..7690f47
--- /dev/null
+++ b/classifier/configs/phase4/p4a_resnet50_50pct.json
@@ -0,0 +1,6 @@
+{
+  "extends": "_base.json",
+  "run_name": "p4a_resnet50_50pct",
+  "backbone": "resnet50",
+  "subsample": 0.5
+}