Add Sentence Transformers compatibility (#1)

- Integrate with Sentence Transformers (634aea7207207bf725aa0266a6af49ecc177926c)
- Default to "Document: " prompt (2ad0ca5b2043873beb9f27bf46f7cbd9b8f9f8b5)

1_Pooling/config.json

@@ -0,0 +1,10 @@
+{
+    "word_embedding_dimension": 1024,
+    "pooling_mode_cls_token": false,
+    "pooling_mode_mean_tokens": false,
+    "pooling_mode_max_tokens": false,
+    "pooling_mode_mean_sqrt_len_tokens": false,
+    "pooling_mode_weightedmean_tokens": false,
+    "pooling_mode_lasttoken": true,
+    "include_prompt": true
+}

README.md

@@ -60,6 +60,41 @@ The following Python packages are required:
 
 </details>
 
+<details>
+  <summary>via <a href="https://sbert.net/">sentence-transformers</a></summary>
+
+```python
+from sentence_transformers import SentenceTransformer
+import torch
+
+model = SentenceTransformer(
+    "jinaai/jina-embeddings-v5-text-small-classification",
+    model_kwargs={"dtype": torch.bfloat16},  # Recommended for GPUs
+    config_kwargs={"_attn_implementation": "flash_attention_2"},  # Recommended but optional
+)
+# Optional: set truncate_dim in encode() to control embedding size
+
+texts = [
+    "My order hasn't arrived yet and it's been two weeks.",
+    "How do I reset my password?",
+    "I'd like a refund for my recent purchase.",
+    "Your product exceeded my expectations. Great job!",
+]
+
+# Encode texts
+embeddings = model.encode(texts)
+print(embeddings.shape)
+# (4, 1024)
+
+similarity = model.similarity(embeddings, embeddings)
+print(similarity)
+# tensor([[1.0000, 0.7347, 0.7988, 0.7523],
+#         [0.7347, 1.0000, 0.7440, 0.7228],
+#         [0.7988, 0.7440, 1.0000, 0.7321],
+#         [0.7523, 0.7228, 0.7321, 1.0000]])
+```
+</details>
+
 <details>
   <summary>via <a href="https://github.com/vllm-project/vllm">vLLM</a></summary>
 

config_sentence_transformers.json

@@ -0,0 +1,13 @@
+{
+    "__version__": {
+      "sentence_transformers": "5.1.2",
+      "transformers": "4.57.0",
+      "pytorch": "2.8.0"
+    },
+    "prompts":{
+      "query": "",
+      "document": "Document: "
+    },
+    "default_prompt_name": "document",
+    "similarity_fn_name": "cosine"
+}

modules.json

@@ -0,0 +1,20 @@
+[
+  {
+    "idx": 0,
+    "name": "0",
+    "path": "",
+    "type": "sentence_transformers.models.Transformer"
+  },
+  {
+    "idx": 1,
+    "name": "1",
+    "path": "1_Pooling",
+    "type": "sentence_transformers.models.Pooling"
+  },
+  {
+    "idx": 2,
+    "name": "2",
+    "path": "2_Normalize",
+    "type": "sentence_transformers.models.Normalize"
+  }
+]