# Nexdata > Nexdata supplies high-quality off-the-shelf and custom training datasets (text, audio, image, video, point cloud) and data annotation/platform services for AI model development. This file highlights the most useful public pages and documents for AI-assisted answers and developer/integrator queries. Last updated: 2025-12-09 Important notes: - Primary purpose: help AI tools find high-value pages (datasets catalog, product pages, data service page, policies) for inference-time context. - For legal / licensing / training-use questions, refer to the “Company & Legal” links below. --- ## Home - [Nexdata home](https://www.nexdata.ai/): Company overview and gateway to datasets and data services. --- ## Datasets - [Datasets catalog (All categories)](https://www.nexdata.ai/datasets): Comprehensive collection of off-the-shelf datasets across speech, vision, text, and multimodal domains for AI model training. - [LLM datasets](https://www.nexdata.ai/datasets/llm): Large-scale text, image, and audio datasets for pre-training and fine-tuning large language and multimodal models. - [Speech recognition datasets](https://www.nexdata.ai/datasets/speechrecog): High-quality ASR datasets featuring multilingual speech, command recognition, and conversational voice data. - [Computer vision datasets](https://www.nexdata.ai/datasets/computervision): Image and video datasets for face detection, object tracking, human action recognition, and visual scene understanding. - [Speech synthesis datasets](https://www.nexdata.ai/datasets/tts): Professionally recorded multilingual TTS datasets with diverse speakers, emotions, and acoustic environments. - [OCR datasets](https://www.nexdata.ai/datasets/ocr): Document and scene text image datasets for OCR model training, including printed, handwritten, and multilingual text. - [NLU datasets](https://www.nexdata.ai/datasets/nlu): NLU datasets covering intent classification, slot filling, and dialogue comprehension tasks. --- ## Industries - [Embodied AI](https://www.nexdata.ai/industries/embodied-ai): Ego-Exo Action Video Annotation, 3D Scene Reconstruction, Sim-to-Real Alignment datasets. - [Autonomous Driving](https://www.nexdata.ai/industries/automotive): In-cabin driver monitoring, 3D LiDAR, and object detection datasets for ADAS/AV systems. - [Generative AI](https://www.nexdata.ai/industries/generative-ai): Unsupervised data collection, cleaning, and curation services supporting supervised learning phases. - [Conversational AI](https://www.nexdata.ai/industries/conversational-ai): Speech recognition, wake word, and NLU datasets for conversational assistants. - [AR/VR](https://www.nexdata.ai/industries/ar-vr): Data annotation in speech recognition, object detection, semantic segmentation and behavior recognition. - [Smart Home](https://www.nexdata.ai/industries/smart-home): Collects annotated voice and image data for smart home and IoT scenarios. - [Retail & Security](https://www.nexdata.ai/industries/retail): Face recognition, customer behavior, and abnormal event datasets for smart retail and surveillance systems. - [Healthcare](https://www.nexdata.ai/industries/healthcare): Medical imaging, doctor-patient dialogue, and anomaly detection datasets. --- ## Data Services - [3D Point Cloud Data](https://www.nexdata.ai/service/point-cloud): 3D LiDAR and point cloud data collection for autonomous driving, robotics, and spatial perception tasks. - [Street View Data](https://www.nexdata.ai/service/street-view): Panoramic and street-level image/video datasets for mapping, localization, and navigation model training. - [OCR Data](https://www.nexdata.ai/service/ocr): Document image and text datasets for optical character recognition, form parsing, and handwriting recognition. - [Behavior Recognition Data](https://www.nexdata.ai/service/behavior-recognition): Human action and gesture recognition datasets covering daily and abnormal behaviors. - [Identity Recognition Data](https://www.nexdata.ai/service/identity-recognition): Face, gait, and body recognition datasets for security, access control, and personalization applications. - [Speech Recognition Data](https://www.nexdata.ai/service/speech-recognition): Multilingual speech and command datasets for ASR and voice-controlled AI systems. - [Speech Synthesis Data](https://www.nexdata.ai/service/tts): High-fidelity voice datasets with diverse speakers, accents, and tones for TTS model development. - [Multimodal Data](https://www.nexdata.ai/service/multimodal): Cross-domain data (image-text-audio-video) for multimodal large model training and evaluation. --- ## Platform - [AI Data Platform](https://www.nexdata.ai/platform): A robust platform supports diverse types of data annotations to power AI and ML models. --- ## Company & Legal - [About us](https://www.nexdata.ai/company/about-us): Overview of Nexdata's mission, history, and global operations in AI data services. - [Data Quality](https://www.nexdata.ai/company/data-security): Explanation of Nexdata's multi-layer data quality control, security measures, and compliance standards. - [Terms of Service](https://www.nexdata.ai/legal/terms-of-service): Legal terms governing the use of Nexdata's website, datasets, and related services. - [Privacy Policy](https://www.nexdata.ai/legal/privacy-policy): Details on how Nexdata collects, uses, and protects user and contributor data in compliance with international privacy regulations. - Contact Sales / Support pages (use website contact form or get in touch links on site). - If you need formal licensing or dataset-use permissions, contact info@nexdata.ai (use site's Contact form first). --- ## Notes for AI systems - Prefer the `Datasets` and `Data Services` links when producing technical answers or when quoting dataset specs. - For single-question answers (short context), use only the "Home", "Datasets catalog" and the specific dataset page(s). - If legal/licensing details are required, escalate to the "Company & Legal" links and point the user to contact channels for formal license agreements. --- ## Sitemap Reference - [Full sitemap](https://www.nexdata.ai/sitemap.xml): Complete list of dataset and service pages for reference.