diff --git a/src/components/echarts/scatter.tsx b/src/components/echarts/scatter.tsx
index 1c53626a..2ab6c517 100644
--- a/src/components/echarts/scatter.tsx
+++ b/src/components/echarts/scatter.tsx
@@ -181,7 +181,7 @@ const Scatter: React.FC<ChartProps> = (props) => {
              <span class="tooltip-value">${item.text}</span>
             </span>`;
           });
-          return `<div class="tooltip-wrapper">${result}</div>`;
+          return `<div class="tooltip-wrapper scatter">${result}</div>`;
         }
       },
       title: {
diff --git a/src/global.less b/src/global.less
index 4918ca5a..68f13e3d 100644
--- a/src/global.less
+++ b/src/global.less
@@ -746,6 +746,12 @@ body {
   min-width: 100px;
   max-width: 360px;
 
+  &.scatter {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 8px;
+  }
+
   .tooltip-x-name {
     font-size: var(--font-size-small);
     color: var(--ant-color-text-tertiary);
diff --git a/src/pages/playground/components/ground-embedding.tsx b/src/pages/playground/components/ground-embedding.tsx
index b6ce42d6..1e635dfa 100644
--- a/src/pages/playground/components/ground-embedding.tsx
+++ b/src/pages/playground/components/ground-embedding.tsx
@@ -207,7 +207,6 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
         }
       );
 
-      console.log('result=========', result);
       setTokenResult(result.usage);
 
       const embeddingsList = result.data || [];
@@ -216,9 +215,9 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
 
       workerRef.current!.onmessage = (event: MessageEvent) => {
         const { scatterData, embeddingData } = event.data;
-        console.log('worker result:', scatterData, embeddingData);
         setScatterData(scatterData);
         setEmbeddingData(embeddingData);
+        setLoading(false);
       };
 
       postMessage({
@@ -226,15 +225,11 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
         textList: textList,
         fileList: fileList
       });
-
-      // generateEmbedding(embeddingsList);
     } catch (error: any) {
-      console.log('result=========error', error);
       setTokenResult({
         error: true,
         errorMessage: extractErrorMessage(error.response)
       });
-    } finally {
       setLoading(false);
     }
   };
@@ -386,7 +381,9 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
         children: (
           <div
             style={{
-              backgroundColor: 'var(--ant-color-bg-container)'
+              backgroundColor: 'var(--ant-color-bg-container)',
+              borderRadius: 'var(--border-radius-base)',
+              overflow: 'hidden'
             }}
           >
             <HighlightCode
@@ -655,8 +652,7 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
                 style={{
                   border: '1px solid var(--ant-color-border)',
                   borderRadius: 'var(--border-radius-base)',
-                  width: '100%',
-                  overflow: 'hidden'
+                  width: '100%'
                 }}
                 className="scatter"
               >
diff --git a/src/pages/playground/config/embedding-worker.worker.ts b/src/pages/playground/config/embedding-worker.worker.ts
index 69a23f43..ec7076a4 100644
--- a/src/pages/playground/config/embedding-worker.worker.ts
+++ b/src/pages/playground/config/embedding-worker.worker.ts
@@ -14,10 +14,14 @@ self.onmessage = (
     const dataList = embeddings.map((item) => {
       return item.embedding;
     });
+    let pca: any = null;
 
-    console.log('list:', dataList);
-    const pca = new PCA(dataList);
-    console.log('list:', pca);
+    // for large datasets, use NIPALS method for PCA
+    if (dataList.length > 200) {
+      pca = new PCA(dataList, { nCompNIPALS: 2, method: 'NIPALS' });
+    } else {
+      pca = new PCA(dataList); // default method is SVD
+    }
     const pcadata = pca.predict(dataList, { nComponents: 2 }).to2DArray();
 
     const input = [