Attn fuse

MSGCoOp/configs/trainers/MSGCoOp/vit_b16_ep100_ctxv1.yaml

@@ -31,3 +31,4 @@ MODEL:
 TRAINER:
   COOP:
     CTX_INIT: True
+    ATTENTION_REG_WEIGHT: 0.01

MSGCoOp/scripts/base2new_all.sh

@@ -3,36 +3,26 @@
 TRAINER=$1
 KG_WEIGHT=$2
 MP_WEIGHT=$3
+ATTN_REG_WEIGHT=$4
 
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} ucf101 ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} ucf101 ${KG_WEIGHT} ${MP_WEIGHT}
+# Define datasets array
+datasets=(
+    "ucf101"
+    "eurosat"
+    "oxford_pets"
+    "food101"
+    "oxford_flowers"
+    "dtd"
+    "caltech101"
+    "fgvc_aircraft"
+    "stanford_cars"
+    "sun397"
+    "imagenet"
+)
 
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} eurosat ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} eurosat ${KG_WEIGHT} ${MP_WEIGHT}
+# Loop through datasets
+for dataset in "${datasets[@]}"; do
+    CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} ${dataset} ${KG_WEIGHT} ${MP_WEIGHT} ${ATTN_REG_WEIGHT}
+    CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} ${dataset} ${KG_WEIGHT} ${MP_WEIGHT} ${ATTN_REG_WEIGHT}
+done
 
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} oxford_pets ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} oxford_pets ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} food101 ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} food101 ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} oxford_flowers ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} oxford_flowers ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} dtd ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} dtd ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} caltech101 ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} caltech101 ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} fgvc_aircraft ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} fgvc_aircraft ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} stanford_cars ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} stanford_cars ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} sun397 ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} sun397 ${KG_WEIGHT} ${MP_WEIGHT}
-
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_train.sh ${TRAINER} imagenet ${KG_WEIGHT} ${MP_WEIGHT}
-CUDA_VISIBLE_DEVICES=0 bash scripts/base2new_test.sh ${TRAINER} imagenet ${KG_WEIGHT} ${MP_WEIGHT}

MSGCoOp/scripts/base2new_test.sh

@@ -7,6 +7,7 @@ DATASET=$2
 N_PROMPTS=4
 KG_WEIGHT=$3
 MP_WEIGHT=$4
+ATTN_REG_WEIGHT=$5
 #CFG=rn50_ep100  # config file
 CFG=vit_b16_ep100_ctxv1
 CTP=end  # class token position (end or middle)
@@ -19,7 +20,7 @@ SUB=new
 
 for SEED in 1 2 3
 do
-    COMMON_DIR=${DATASET}/shots_${SHOTS}_${KG_WEIGHT}/${TRAINER}/${CFG}/seed${SEED}
+    COMMON_DIR=${DATASET}/shots_${SHOTS}_${KG_WEIGHT}_${MP_WEIGHT}_${ATTN_REG_WEIGH}/${TRAINER}/${CFG}/seed${SEED}
     MODEL_DIR=output/base2new/train_base/${COMMON_DIR}
     DIR=output/base2new/test_${SUB}/${COMMON_DIR}
 

MSGCoOp/scripts/base2new_train.sh

@@ -6,6 +6,7 @@ TRAINER=$1
 DATASET=$2
 KG_WEIGHT=$3
 MP_WEIGHT=$4
+ATTN_REG_WEIGHT=$5
 N_PROMPTS=4
 #CFG=rn50_ep100  # config file\
 CFG=vit_b16_ep100_ctxv1
@@ -16,7 +17,7 @@ CSC=False  # class-specific context (False or True)
 
 for SEED in 1 2 3
 do
-    DIR=output/base2new/train_base/${DATASET}/shots_${SHOTS}_${KG_WEIGHT}/${TRAINER}/${CFG}/seed${SEED}
+    DIR=output/base2new/train_base/${DATASET}/shots_${SHOTS}_${KG_WEIGHT}_${MP_WEIGHT}_${ATTN_REG_WEIGH}/${TRAINER}/${CFG}/seed${SEED}
     if [ -d "$DIR" ]; then
         echo "Results are available in ${DIR}. Skip this job"
     else
@@ -35,6 +36,7 @@ do
         DATASET.NUM_SHOTS ${SHOTS} \
         DATASET.SUBSAMPLE_CLASSES base \
 	    TRAINER.COOP.N_PROMPTS ${N_PROMPTS} \
-        TRAINER.COOP.DIV_WEIGHT ${MP_WEIGHT}
+        TRAINER.COOP.DIV_WEIGHT ${MP_WEIGHT} \
+        TRAINER.COOP.ATTENTION_REG_WEIGHT ${ATTN_REG_WEIGHT}
     fi
 done

MSGCoOp/train.py

@@ -105,6 +105,7 @@ def extend_cfg(cfg):
     cfg.TRAINER.COCOOP.PREC = "fp16"  # fp16, fp32, amp
     cfg.TRAINER.COOP.DIV_WEIGHT = 0.1
     cfg.TRAINER.COOP.N_PROMPTS = 3
+    cfg.TRAINER.COOP.ATTENTION_REG_WEIGHT = 0.01
 
     cfg.DATASET.SUBSAMPLE_CLASSES = "all"  # all, base or new
     """

MSGCoOp/trainers/msgcoop.py

@@ -223,6 +223,28 @@ class Adapter(nn.Module):
         x = self.fc(x)
         return x
 
+class AttentionBasedIntegrator(nn.Module):
+    def __init__(self, img_dim=512, n_prompts=4, dtype=None):
+        super().__init__()
+        self.attention = nn.Sequential(
+            nn.Linear(img_dim, img_dim // 4),
+            nn.Tanh(),
+            nn.Linear(img_dim // 4, n_prompts)
+        )
+        self.dtype = dtype
+        
+        if dtype is not None:
+            self.attention = self.attention.to(dtype)
+        
+    def forward(self, image_features, all_logits):
+        attn_scores = self.attention(image_features)
+        
+        attn_weights = F.softmax(attn_scores, dim=-1)
+        
+        weighted_logits = torch.einsum('bp,pbc->bc', attn_weights, all_logits)
+        
+        return weighted_logits, attn_weights
+
 class CustomCLIP(nn.Module):
     def __init__(self, cfg, classnames, clip_model):
         super().__init__()
@@ -236,6 +258,12 @@ class CustomCLIP(nn.Module):
         self.dtype = clip_model.dtype
         self.meta_net = self.prompt_learner.meta_net
         self.adapter = Adapter(512, 4).to(clip_model.dtype)
+        
+        self.prompt_integrator = AttentionBasedIntegrator(
+            img_dim=clip_model.visual.output_dim,
+            n_prompts=self.n_prompts,
+            dtype=clip_model.dtype
+        )
 
     def compute_diversity_loss(self, text_features):
         if self.n_prompts == 1:
@@ -283,10 +311,12 @@ class CustomCLIP(nn.Module):
             text_features_i = text_features_i / text_features_i.norm(dim=-1, keepdim=True)
             logits_i = logit_scale * image_features @ text_features_i.t()
             all_logits.append(logits_i)
+        
+        all_logits = torch.stack(all_logits)
+        
+        logits, attn_weights = self.prompt_integrator(image_features, all_logits)
 
-        logits = torch.stack(all_logits).mean(dim=0)
-
-        return logits, score, diversity_loss
+        return logits, score, diversity_loss, attn_weights
 
 
 @TRAINER_REGISTRY.register()
@@ -310,10 +340,11 @@ class MSGCoOp(TrainerX):
         self.model = CustomCLIP(cfg, classnames, clip_model)
         self.w = cfg.TRAINER.COOP.W
         self.diversity_weight = cfg.TRAINER.COOP.DIV_WEIGHT
+        self.attn_reg_weight = cfg.TRAINER.COOP.ATTENTION_REG_WEIGHT if hasattr(cfg.TRAINER.COOP, 'ATTENTION_REG_WEIGHT') else 0.01
 
         print("Turning off gradients in both the image and the text encoder")
         for name, param in self.model.named_parameters():
-            if "ctx" not in name: 
+            if "ctx" not in name and "prompt_integrator" not in name: 
                 param.requires_grad_(False)
             else:
                 print(name)
@@ -322,8 +353,10 @@ class MSGCoOp(TrainerX):
             load_pretrained_weights(self.model.prompt_learner, cfg.MODEL.INIT_WEIGHTS)
 
         self.model.to(self.device)
-        # NOTE: only give prompt_learner to the optimizer
-        self.optim = build_optimizer(self.model.prompt_learner, cfg.OPTIM)
+        
+        # NOTE: give prompt_learner and prompt_integrator to the optimizer
+        trainable_params = list(self.model.prompt_learner.parameters()) + list(self.model.prompt_integrator.parameters())
+        self.optim = build_optimizer([{'params': trainable_params}], cfg.OPTIM)
         self.sched = build_lr_scheduler(self.optim, cfg.OPTIM)
         self.register_model("prompt_learner", self.model.prompt_learner, self.optim, self.sched)
         
@@ -352,8 +385,12 @@ class MSGCoOp(TrainerX):
             self.scaler.step(self.optim)
             self.scaler.update()
         else:
-            output, score, diversity_loss = self.model(image)
-            loss = F.cross_entropy(output, label)+self.w*score + diversity_loss * self.diversity_weight
+            output, score, diversity_loss, attn_weights = self.model(image)
+            
+            # Add attention regularization to encourage balanced prompt usage
+            attn_reg = -(attn_weights * torch.log(attn_weights + 1e-8)).mean()
+            
+            loss = F.cross_entropy(output, label) + self.w * score + diversity_loss * self.diversity_weight + self.attn_reg_weight * attn_reg
             self.model_backward_and_update(loss)
 
         loss_summary = {

readme.md

@@ -1,5 +1,8 @@
 # MSGCoOp: Visual-Language Prompt Tuning with Knowledge-guided Context Optimization
 
+[![Paper](https://img.shields.io/badge/arXiv-Paper-brightgreen.svg)](https://arxiv.org/abs/2507.21786)
+[![Code](https://img.shields.io/badge/Code-GitHub-blueviolet.svg)](https://github.com/Rain-Bus/MSGCoOp)
+
 ## Overview of MSGCoOp
 
 We introduce **Multi-prompt Semantic-Guided Context Optimization (MSGCoOp)**, a novel framework that advances CLIP-based prompt tuning for few-shot learning. MSGCoOp addresses the challenge of generalizing to novel classes efficiently, without heavy architectural modifications or expensive computation.