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README.md
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Apple CoreML 版本的 CKIP BERT-base 繁體中文 NLP 模型,可在 iOS/macOS 上透過 Apple Neural Engine (ANE) 執行。
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## 模型說明
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| fp16 | 194 MB | WS 100% / POS 99.97% / NER 99.99% | **推薦預設** ⚡ |
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| q8 | 98 MB | WS 99.96% / POS 98.83% / NER 99.76% | 低記憶體 iPhone |
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##
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測試資料:維基百科「臺灣」條目,36,245 字
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CoreML
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#
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```python
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import coremltools as ct
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import numpy as np
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model = ct.models.MLModel("ckip_ws_fp16.mlpackage")
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text = "台積電今天股價上漲三十元"
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out = model.predict({"input_ids": input_ids, "attention_mask": attention_mask})
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preds = np.argmax(out["logits"], axis=-1)[0]
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```
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### Swift / iOS
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```swift
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let input = try MLDictionaryFeatureProvider(dictionary: [
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"input_ids":
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"attention_mask":
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])
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let output = try model.prediction(from: input)
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- POS: 11 tokens 不同 (99.97%)
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- NER: 3 tokens 不同 (99.99%)
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## 跨框架驗證
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CoreML fp32 與 MLX fp32、HF Transformers fp32 的 WS/POS/NER 輸出**完全一致**,確認轉換正確。
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## 相關專案
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- [FakeRockert543/ckip-mlx](https://huggingface.co/FakeRockert543/ckip-mlx) — MLX 版本(桌面推薦)
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- [FakeRocket543/ckip-coreml](https://github.com/FakeRocket543/ckip-coreml) — 原始碼與轉換腳本
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## 授權
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[GPL-3.0](https://www.gnu.org/licenses/gpl-3.0.html),依循原始 [ckiplab/ckip-transformers](https://github.com/ckiplab/ckip-transformers) 授權。
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Apple CoreML 版本的 CKIP BERT-base 繁體中文 NLP 模型,可在 iOS/macOS 上透過 Apple Neural Engine (ANE) 執行。
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- 📦 原始碼:[GitHub — FakeRocket543/ckip-coreml](https://github.com/FakeRocket543/ckip-coreml)
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- 🤗 模型權重:[HuggingFace — FakeRockert543/ckip-coreml](https://huggingface.co/FakeRockert543/ckip-coreml)(本頁)
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- 🧪 MLX 版本(桌面推薦):[HuggingFace — FakeRockert543/ckip-mlx](https://huggingface.co/FakeRockert543/ckip-mlx)
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從 [ckiplab/ckip-transformers](https://github.com/ckiplab/ckip-transformers) 轉換而來。CoreML fp16 是所有框架中最快的,比 CKIP 官方快 **6.3 倍**。
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## 模型說明
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| fp16 | 194 MB | WS 100% / POS 99.97% / NER 99.99% | **推薦預設** ⚡ |
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| q8 | 98 MB | WS 99.96% / POS 98.83% / NER 99.76% | 低記憶體 iPhone |
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## 從零開始使用(完整步驟)
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### 1. 環境準備
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需要 macOS + Apple Silicon。CoreML Tools 目前需要 Python 3.13(不支援 3.14)。
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```bash
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# 取得原始碼
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git clone https://github.com/FakeRocket543/ckip-coreml.git
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cd ckip-coreml
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# 建立虛擬環境(需要 Python 3.13)
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python3.13 -m venv .venv && source .venv/bin/activate
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# 安裝依賴
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pip install coremltools numpy huggingface_hub
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```
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### 2. 下載模型
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```bash
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# 從 HuggingFace 下載全部 .mlpackage
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huggingface-cli download FakeRockert543/ckip-coreml --local-dir .
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```
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下載後目錄結構:
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```
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ckip-coreml/
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├── ckip_ws_fp16.mlpackage # 斷詞 fp16(推薦)
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├── ckip_ws_fp32.mlpackage
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├── ckip_ws_q8.mlpackage
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├── ckip_pos_fp16.mlpackage # 詞性 fp16
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├── ckip_pos_fp32.mlpackage
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├── ckip_pos_q8.mlpackage
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├── ckip_ner_fp16.mlpackage # 實體 fp16
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├── ckip_ner_fp32.mlpackage
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├── ckip_ner_q8.mlpackage
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├── ckip_ws.mlpackage # 原始版本 (=fp32)
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├── ckip_pos.mlpackage
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└── ckip_ner.mlpackage
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```
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### 3. 準備詞表
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CoreML 模型不包含詞表,需要從 MLX 版本取得,或自行下載 BERT 中文詞表:
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```bash
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# 方法一:從 MLX repo 下載 vocab.txt
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huggingface-cli download FakeRockert543/ckip-mlx models/vocab.txt --local-dir .
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mv models/vocab.txt vocab.txt && rm -rf models
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# 方法二:從原始 BERT 下載
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# wget https://huggingface.co/bert-base-chinese/resolve/main/vocab.txt
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```
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### 4. 執行斷詞(Python)
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```python
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import coremltools as ct
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import numpy as np
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# 載入詞表
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vocab = {}
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with open("vocab.txt") as f:
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for i, line in enumerate(f):
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vocab[line.strip()] = i
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# 載入模型(推薦 fp16)
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model = ct.models.MLModel("ckip_ws_fp16.mlpackage")
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# Tokenize(BERT 單字切分)
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text = "台積電今天股價上漲三十元"
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ids = [101] + [vocab.get(ch, 100) for ch in text] + [102] # 101=[CLS], 102=[SEP], 100=[UNK]
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input_ids = np.array([ids], dtype=np.int32)
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attention_mask = np.ones_like(input_ids, dtype=np.int32)
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# 推論
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out = model.predict({"input_ids": input_ids, "attention_mask": attention_mask})
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preds = np.argmax(out["logits"], axis=-1)[0]
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# 解碼斷詞結果(B=0: 詞首, I=1: 詞中)
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words, cur = [], ""
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for i, ch in enumerate(text):
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p = preds[i + 1] # +1 跳過 [CLS]
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if p == 0 and cur:
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words.append(cur)
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cur = ch
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else:
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cur += ch
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if cur:
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words.append(cur)
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print(words)
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# ['台積電', '今天', '股價', '上漲', '三十', '元']
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```
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### 5. 執行詞性標注(Python)
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```python
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import json
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pos_model = ct.models.MLModel("ckip_pos_fp16.mlpackage")
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out = pos_model.predict({"input_ids": input_ids, "attention_mask": attention_mask})
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preds = np.argmax(out["logits"], axis=-1)[0]
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# POS id2label 對照表(從 MLX config.json 取得,或用以下常見標籤)
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# 完整對照表見 GitHub repo 的 models/pos/config.json
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for i, ch in enumerate(text):
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print(f"{ch} → label_id={preds[i + 1]}")
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```
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### 6. 在 Swift / iOS 中使用
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```swift
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import CoreML
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// 載入模型
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let config = MLModelConfiguration()
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config.computeUnits = .all // 使用 ANE + GPU + CPU
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let model = try MLModel(contentsOf: modelURL, configuration: config)
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// 準備輸入
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let inputIds = try MLMultiArray(shape: [1, seqLen as NSNumber], dataType: .int32)
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let attentionMask = try MLMultiArray(shape: [1, seqLen as NSNumber], dataType: .int32)
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// 填入 token IDs([CLS] + 單字 IDs + [SEP])
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for (i, id) in tokenIds.enumerated() {
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inputIds[i] = NSNumber(value: id)
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attentionMask[i] = 1
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}
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// 推論
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let input = try MLDictionaryFeatureProvider(dictionary: [
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"input_ids": inputIds,
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"attention_mask": attentionMask
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let output = try model.prediction(from: input)
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let logits = output.featureValue(for: "logits")!.multiArrayValue!
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// 取 argmax 得到預測標籤
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```
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## 速度
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測試環境:Apple M4 Max / 128GB / macOS 26.3.1
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測試資料:維基百科「臺灣」條目,36,245 字,10 runs median
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| Framework | fp32 | fp16 |
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| **CoreML** | 2,879 ms | **2,352 ms** ⚡ |
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| MLX | 2,869 ms | 3,092 ms |
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| HF Transformers (MPS) | 3,532 ms | 3,096 ms |
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| CKIP 官方 (MPS) | 14,926 ms | 11,850 ms |
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## 跨框架驗證
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CoreML fp32 與 MLX fp32、HF Transformers fp32 的 WS/POS/NER 輸出**完全一致**,確認轉換正確。
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## 授權
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[GPL-3.0](https://www.gnu.org/licenses/gpl-3.0.html),依循原始 [ckiplab/ckip-transformers](https://github.com/ckiplab/ckip-transformers) 授權。
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