add ance-dpr-context-multi encoder model

config.json

@@ -0,0 +1,21 @@
+{
+  "architectures": [
+    "DPRQuestionEncoder"
+  ],
+  "attention_probs_dropout_prob": 0.1,
+  "gradient_checkpointing": false,
+  "hidden_act": "gelu",
+  "hidden_dropout_prob": 0.1,
+  "hidden_size": 768,
+  "initializer_range": 0.02,
+  "intermediate_size": 3072,
+  "layer_norm_eps": 1e-12,
+  "max_position_embeddings": 512,
+  "model_type": "dpr",
+  "num_attention_heads": 12,
+  "num_hidden_layers": 12,
+  "pad_token_id": 0,
+  "projection_dim": 0,
+  "type_vocab_size": 2,
+  "vocab_size": 30522
+}

pytorch_model.bin

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+version https://git-lfs.github.com/spec/v1
+oid sha256:858bbae8a2bbc0b5239329c505260434f68ea1da8fd348c5bda26935a0d2661e
+size 438000942

tokenizer_config.json

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+{
+  "do_lower_case": true
+}