AI Service Support
Based on Chinese AI LLM: Chinese assessment, speech recognition, speech synthesis, and smart tutoring. AI engine is cloud-deployed and supports the teaching platform with no call limits.
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Four core AI capabilities
Full teaching support
Chinese assessment, speech recognition (≥95%), speech synthesis, smart tutoring. Cloud-deployed AI engine supports the teaching platform.
Speech recognition
High-accuracy speech recognition — Trained on large-scale data, Chinese recognition ≥95%. Endpoint detection, noise reduction, multi-format (opus, pcm, mp3, amr, speex).
Speech synthesis
Multi-voice synthesis — Text to natural speech. Multiple voices, character sets (GB2312, GBK, Big5, Unicode, UTF-8), male/female/child voices.
Smart assessment
Multi-dimensional assessment — Speaking (fluency, completeness, accuracy, tone), writing (AIGC-based essay grading), text difficulty (1–7 levels).
Smart tutoring
AI-driven personalized tutoring — Ability profile, daily recommended exercises, 853-dimension knowledge map, learning path planning.
Chinese assessment
Three assessment systems
Speaking, writing, and text-difficulty assessment for international Chinese education.
Speaking assessment
Multi-level speech assessment — Fluency, completeness, accuracy, tone. Optimized for L2 Chinese learners. Correlation with expert scores 0.571.
Essay assessment
AIGC-based essay grading — Character/word errors, punctuation, grammar, discourse. RASNC prompt framework. Standard annotation symbols.
Text difficulty
Grammar-point detection & level (1–7) — 572 grammar points. GP-NRR framework. Supports textbooks, tests, reading materials.
Smart tutoring
AI-driven personalized learning
Ability profile (85 leaf indicators), daily recommended exercises, 853-dimension knowledge map. Adaptive learning paths.
Ability profile
Multi-dimensional profile — Language (listening, speaking, reading, writing), class performance, community. Level labels: Master, Expert, Able, Beginner.
Recommended exercises
Daily recommendations — Based on level and goals. Time slots: morning (listening), noon (reading), evening (speaking), night (writing).
Knowledge map
853-dimension knowledge map — Mastery visualization. Learning paths (HSK 14665 dims, YKK 3333 dims). Peer matching by similarity.
AI service features
Stable and high performance
Cloud deployment, multi-concurrent access, no call limits. Supports real-time assessment, audio save and replay.
API & deployment — WebSocket and HTTP. Multi-concurrent. Cloud-deployed. No call limits.
Assessment support — Real-time speaking, video dubbing, reading aloud, free speech, essay grading, text difficulty, audio save and replay.
