diff --git a/docs/configs/mmm_emotion_seed_iv.yml b/docs/configs/mmm_emotion_seed_iv.yml
new file mode 100644
index 0000000..5d8e5f0
--- /dev/null
+++ b/docs/configs/mmm_emotion_seed_iv.yml
@@ -0,0 +1,48 @@
+data:
+  type: SEED_IV
+  window_size: 1
+  # the subject index of the dataset
+  subject_index: 1
+  # the upper directory of the dataset
+  prefix: ./data
+
+network:
+  type: MMM_Encoder
+  depth: 6
+  num_heads: 8
+  encoder_dim: 64
+  channel_num: 79
+  in_chans: 5
+  pe_type: 2d
+
+decoder_network: # used only during pre-training. Can be omitted if only finetuning.
+  type: MMM_Encoder
+  depth: 6
+  encoder_dim: 64
+  channel_num: 79
+  in_chans: 16
+
+model:
+  type: MMM_Finetune
+  task: multiclassification
+  # set up pre-trained model path, leave blank for training from scratch
+  # E.g.
+  # uncomment the following line to use the pre-trained model
+  # model_path: /path/to/tuh_pretrained_encoder_base.pt
+  optimizer: Adam
+  lr: 0.00005
+  weight_decay: 0.005
+  loss_fn: cross_entropy
+  metrics: [accuracy]
+  observe: accuracy
+  lower_is_better: False
+  max_epochs: 100
+  early_stop: 70
+  batch_size: 32
+  out_size: 4
+  mask_ratio: 0.
+
+runtime:
+  seed: 51
+  use_cuda: true
+  output_dir: outputs/MMM_SEED_IV/1/
\ No newline at end of file
diff --git a/physiopro/dataset/SEED_IV.py b/physiopro/dataset/SEED_IV.py
new file mode 100644
index 0000000..4e654af
--- /dev/null
+++ b/physiopro/dataset/SEED_IV.py
@@ -0,0 +1,258 @@
+from typing import Optional
+
+import torch
+from torch.utils.data import Dataset
+import numpy as np
+import scipy.io as sio
+from scipy.stats import rankdata
+
+from .base import DATASETS
+
+
+@DATASETS.register_module()
+class SEED_IV(Dataset):
+    def __init__(
+        self,
+        prefix: str = "./data/",
+        name: str = "DE",
+        window_size: int = 1,
+        addtime: bool = False,
+        subject_index: Optional[int] = -1,
+        dataset_name: Optional[str] = 'train',
+        channel: int = 62,
+        local: bool = False,
+        normalize: str = 'gaussian',
+    ):
+        super().__init__()
+        self.window_size = window_size
+        self.addtime = addtime
+        self.dataset_name = dataset_name
+        self.channel = channel
+        self.local = local
+        self.out_size = 4
+        file = prefix + "/SEED-IV/" + name + "/"
+        data_file_path = file + "DE_{}.mat"
+        de_label={}
+        for i in range(3):
+            de_label[i] = np.array(sio.loadmat(file + f"DE_{i+1}_labels.mat")['de_labels']).squeeze(0)
+        self.candidate_list = (
+            [subject_index] if subject_index != -1 else list(range(45))
+        )
+        self.label = [de_label[i%3] for i in self.candidate_list]
+        self.data =[
+                np.array(sio.loadmat(data_file_path.format(i + 1))["DE_feature"]).transpose(1,0,2)
+                for i in self.candidate_list
+            ]
+        self._normalize(normalize)
+        self._split(self.dataset_name)
+
+        if addtime:
+            self._addtimewindow(window_size)
+            # N,T,C,F -> N,C,T,F
+            self.data = self.data.transpose(0,2,1,3)
+        else:
+            self.data =  np.concatenate(self.data, axis=0)
+            self.label = np.concatenate(self.label, axis=0)
+        idx = [0,1,2,3,4,5,6,7,8,9,
+                10,17,18,19,11,12,13,
+                14,15,16,20,21,22,23,
+                24,25,26,27,28,29,30,
+                31,32,33,34,35,36,37,
+                44,45,46,38,39,40,41,
+                42,43,47,48,49,50,51,
+                57,52,53,54,58,59,60,
+                55,56,61]
+        idx=torch.tensor(idx)
+        self.data = torch.tensor(self.data)
+        self.data = torch.index_select(self.data,dim=1,index=idx)
+        self.data = self.data.numpy()
+
+        self.get_coordination()
+
+
+    def _normalize(self,method='minmax'):
+        train_size = [610, 558, 567]
+        # min-max normalization
+        if method == 'minmax':
+            for i, candidate in enumerate(self.candidate_list):
+                for j in range(5):
+                    # 0~train_size[candidate%3] is the training set, train_size[candidate%3]:: is the valid set
+                    minn = np.min(self.data[i][ :train_size[candidate%3], :, j])
+                    maxx = np.max(self.data[i][ :train_size[candidate%3], :, j])
+                    self.data[i][:,:,j] = (self.data[i][:,:,j] - minn) / (maxx-minn)
+
+        # gaussian standardization
+        if method == 'gaussian':
+            for i, candidate in enumerate(self.candidate_list):
+                for j in range(5):
+                    # 0~train_size[candidate%3] is the training set, train_size[candidate%3]:: is the valid set
+                    mean = np.mean(self.data[i][ :train_size[candidate%3], :, j])
+                    std = np.std(self.data[i][ :train_size[candidate%3], :, j])
+                    self.data[i][:, :, j] = (self.data[i][:, :, j] - mean) / std
+
+    def _addtimewindow(self, window):
+        S = len(self.data)
+        data_results = []
+        label_results = []
+        for i in range(S):
+            # padding from the last sample, to make sure the sample number is the same after addtimewindow operation
+            data = self.data[i]
+            label = self.label[i]
+            print(data.shape)
+            print(label.shape)
+            N, C, F = data.shape
+            data = np.concatenate([data, data[-(window):, :, :]], 0)
+            label = np.concatenate([label, label[-(window):]], 0)
+            data_res = np.zeros(shape=(N, window, C, F))
+            label_res = np.zeros(shape=N)
+            for j in range(N):
+                # met the corner case
+                if (
+                    label[j] == label[j + window - 1]
+                    and label[j] != label[j + window]
+                ):
+                    nearest = j + window
+                #
+                elif label[j] == label[j + window - 1]:
+                    nearest = -1
+                if nearest != -1:
+                    data_res[j, :, :, :] = np.concatenate(
+                        [
+                            data[j:nearest, :, :],
+                            np.zeros(shape=(window - nearest + j, C, F)),
+                        ],
+                        0,
+                    )
+                else:
+                    data_res[j, :, :, :] = data[j : j + window, :, :]
+                label_res[j] = label[j]
+            data_results.append(data_res)
+            label_results.extend(label_res)
+
+        self.data = np.concatenate(data_results, 0)
+        self.label = np.array(label_results)
+
+    def _split(self, dataset_name):
+        train_size = [610, 558, 567]
+
+        if dataset_name == "train":
+            for idx, candidate in enumerate(self.candidate_list):
+                print(self.data[idx].shape)
+                self.data[idx] = self.data[idx][:train_size[candidate%3]]
+                self.label[idx] = self.label[idx][:train_size[candidate%3]]
+        elif dataset_name == "valid":
+            for idx, candidate in enumerate(self.candidate_list):
+                self.data[idx] = self.data[idx][train_size[candidate%3]:]
+                self.label[idx] = self.label[idx][train_size[candidate%3]:]
+        else:
+            raise ValueError("dataset_name should be train or valid")
+
+    def get_coordination(self):
+        func_areas = [[0,1,2,3,4],[5,6,7],[8,9,10,11,12,13],[14,15,16],[17,18,19],[20,21,22],[23,24,25],
+            [26,27,28],[29,30,31],[32,33,34],[35,36,37,38,39,40],[41,42,43],[44,45,46],[47,48,49],
+            [50,51,52],[53,54,55,56,57,58],[59,60,61]]
+        coordination = np.array([[
+            -27, 0, 27, -36, 36, -71, -64, -48, -25, 0, 25,
+            -33, 0, 33, 48, 64, 71, -83, -78, -59, 59, 78, 83,
+            -87, -82, -63, -34, 0, 34, 63, 82, 87, -83, -78,
+            -59, -33, 0, 33, -25, 0, 25, 59, 78, 83, -71,
+            -64, -48, 48, 64, 71, -51, -40, -36, -36, 0,
+            36, -27, 0, 27, 40, 51, 36
+        ],
+        [
+            83, 87, 83, 76, 76, 51, 55, 59, 62, 63, 62, 33, 34, 33, 59, 55, 51, 27,
+            30, 31, 31, 30, 27, 0, 0, 0, 0, 0, 0, 0, 0, 0, -27, -30, -31, -33, -34,
+            -33, -62, -63, -62, -31, -30, -27, -51, -55, -59, -59, -55, -51,
+            -71, -76, -83, -76, -82, -76, -83, -87, -83, -76, -71, -83
+        ],
+        [
+            -3, -3, -3, 24, 24, -3, 23, 44, 56, 61, 56, 74, 81, 74, 44, 23, -3,
+            -3, 27, 56, 56, 27, -3, -3, 31, 61, 81, 88, 81, 61, 31, -3, -3, 27,
+            56, 74, 81, 74, 56, 61, 56, 56, 27, -3, -3, 23, 44, 44, 23, -3, -3, 24,
+            -3, 24, 31, 24, -3, -3, -3, 24, -3, -3
+        ]])
+        for i in range(coordination.shape[0]):
+            arr = coordination[i]
+            rank = rankdata(arr, method="dense") - 1
+            coordination[i] = rank
+        sph_coordination = np.array([[
+            18,0,-18,25,-25,54,49,39,22,0,-22,45,0,-45,-39,-49,-54,72,69,62,-62,
+            -69,-72,90,90,90,90,-90,-90,-90,-90,-90,108,111,118,135,-180,-135,158,
+            -180,-158,-118,-111,-108,126,131,141,-141,-131,-126,144,155,162,155,-180,
+            -155,162,-180,-162,-155,-144,-162
+        ],
+        [
+            -2,-2,-2,16,16,-2,15,30,40,44,40,58,67,58,30,15,-2,-2,
+            18,40,40,18,-2,-2,21,44,67,90,67,44,21,-2,-2,18,40,58,
+            67,58,40,44,40,40,18,-2,-2,15,30,30,15,-2,-2,-2,-2,16,
+            21,16,-2,-2,-2,-2,-2,-2,
+        ]])
+
+        # process attention mask
+        attn_mask = torch.zeros((80,80),dtype=torch.int)
+        if self.local:
+            for func_area in func_areas:
+                for i in func_area:
+                    for j in func_area:
+                        attn_mask[i,j] = 1
+        else:
+            for i in range(62):
+                for j in range(62):
+                    attn_mask[i,j] = 1
+        for i, _ in enumerate(func_areas):
+            for j in func_areas[i]:
+                attn_mask[62+i,j] = 1
+                attn_mask[j,62+i] = 1
+        for i in range(17):
+            for j in range(17):
+                attn_mask[62+i,62+j] = 1
+        for i in range(62+17+1):
+            attn_mask[62+17, i] = 1
+            attn_mask[i, 62+17] = 1
+        self.attn_mask = (1-attn_mask).bool()
+        #process supernode coordination
+        self.coordination = area_gather(coordination, func_areas)
+        self.sph_coordination = area_gather(sph_coordination, func_areas)
+
+    def get_index(self):
+        return self.label.index
+
+    def __len__(self):
+        return self.label.shape[0]
+
+    def __getitem__(self, idx):
+        return (
+            torch.tensor(
+                self.data[idx],
+                dtype=torch.float,
+            ),
+            torch.tensor(
+                self.label[idx],
+                dtype=torch.long,
+            ).squeeze(),
+        )
+
+    def freeup(self):
+        pass
+
+    def load(self):
+        pass
+
+def area_gather(coordination, areas):
+    supernode_coordination = np.zeros([coordination.shape[0], len(areas)])
+    for idx,area in enumerate(areas):
+        for i in area:
+            for j in range(coordination.shape[0]):
+                supernode_coordination[j][idx] += coordination[j][i]/len(area)
+
+    res = np.concatenate((coordination,supernode_coordination), axis=1)
+    return res
+
+if __name__=='__main__':
+    dataset = SEED_IV(subject_index=0,window_size=10,addtime=True)
+    dl = torch.utils.data.DataLoader(dataset, batch_size=32, shuffle=True)
+    cnt=0
+    for data,label in dl:
+        print(data.shape)
+        cnt+=data.shape[0]
+    print(cnt)
diff --git a/physiopro/dataset/__init__.py b/physiopro/dataset/__init__.py
index 513ebd7..7b7228a 100644
--- a/physiopro/dataset/__init__.py
+++ b/physiopro/dataset/__init__.py
@@ -7,4 +7,5 @@
 from .df import DfDataset
 from .cinc2020 import CinC2020
 from .SEED import SEED
+from .SEED_IV import SEED_IV
 from .tpp import EventDataset
diff --git a/physiopro/model/mmm.py b/physiopro/model/mmm.py
index 9f7b67a..bb16342 100644
--- a/physiopro/model/mmm.py
+++ b/physiopro/model/mmm.py
@@ -15,6 +15,7 @@
 from ..common.utils import AverageMeter, GlobalTracker, to_torch,printt
 from .base import MODELS,BaseModel
 
+
 @MODELS.register_module()
 class MMM_Finetune(BaseModel):
     def __init__(
diff --git a/scripts/extract.py b/scripts/extract.py
new file mode 100644
index 0000000..25753ba
--- /dev/null
+++ b/scripts/extract.py
@@ -0,0 +1,39 @@
+import os
+import glob
+import numpy as np
+import scipy.io as sio
+
+
+data_path = '/home/yansenwang/data/SEED-IV/SEED-IV/eeg_feature_smooth/' # path to the raw SEED dataset
+save_path = '/home/yansenwang/data/New_SEED_IV/DE/'
+os.makedirs(save_path, exist_ok=True)
+labels = [
+    [1,2,3,0,2,0,0,1,0,1,2,1,1,1,2,3,2,2,3,3,0,3,0,3],
+    [2,1,3,0,0,2,0,2,3,3,2,3,2,0,1,1,2,1,0,3,0,1,3,1],
+    [1,2,2,1,3,3,3,1,1,2,1,0,2,3,3,0,2,3,0,0,2,0,1,0]
+]
+final_labels = {}
+
+for exp in range(3):
+    filenames = glob.glob(os.path.join(data_path, f'{exp+1}/*.mat'))
+    filenames.sort()
+    for sub in range(15):
+        session_label = []
+        data = []
+        mat_path = filenames[sub]
+        print(mat_path)
+        T = sio.loadmat(mat_path)
+
+        for trial in range(24):
+            temp = T['de_LDS' + str(trial + 1)]
+            data.append(temp)
+
+            if sub == 0:
+                temp_label = np.tile(labels[exp][trial], temp.shape[1])
+                session_label.extend(temp_label)
+        if sub == 0:
+            final_labels[exp] = session_label
+        data = np.concatenate(data, axis=1)
+        sio.savemat(os.path.join(save_path, 'DE_' + str(sub * 3 + exp+1) + '.mat'), {'DE_feature': np.array(data)}) # save the features
+for exp in range(3):
+    sio.savemat(os.path.join(save_path, 'DE_' + str(exp+1) + '_labels.mat'), {'de_labels': np.array(final_labels[exp])})