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Trusted by global AI Companies, Enterprises & Startups, University Research Institutes

  • ZOOM
  • SoundHound
  • NCsoft
  • MZ
  • seoul national university
  • iFLYTEK
  • AWS
  • UBTECH
  • ICBC
  • CISCO
  • Google
  • Meta
  • tiktok
  • Lenovo

Tailored Data Services for Conversational AI Service

Nexdata supports tailored customer service speech data collection according to language, timbre, style, and industry, and provides data processing such as information extraction, classification and annotation for the massive raw data.

Multi-language

Multi-language

Support speech data collection in accented English, code-switching, Chinese dialects, etc.

Multi-domain

Multi-domain

Support real scene customer service data collection in multiple industries such as finance, insurance, and e-commerce.

Speech Segmentation

Speech Segmentation

Speech segmentation for long audio, noise, valid/invalid audio.

Speech Annotation

Speech Annotation

Support multi-paragraph transcription annotation for long and short natural speech audio.

Emotion Annotation

Emotion Annotation

Support positive or negative emotions information annotation of speaker's voice.

Compliance & Security

Nexdata place the utmost emphasis on data security and client trust. We follows Personal Information Protection Act, GDPR, CCPA, PIPC and HIPAA regulations. we have also achieved ISO 27001,ISO 27701 and ISO 9001 qualifications for security and regulatory compliance. Nexdata delivers unparalleled data security, earning the trust of our clients through our adherence to these globally recognized standards.

GDPR
GDPR
CCPA
CCPA
SOC2
SOC2
ISO27701
ISO27701
ISO27001
ISO27001
ISO9001
ISO9001

Deploy reliable AI faster with Nexdata

Nexdata helps you to gain unparalleled control of your annotation workflow through pipeline. Speed up your AI projects 5x today.

Collect Data Label Data Train Your Modle Manage Data Deploy AI

Send exploratory or potentially harmful cases back to be labeled

Case Studies

Speech Recognition conversational ai
  • USE CASE：Speech Recognition for Cantonese Customer Service.
  • CHALLENGE：Client hopes to enhance the accuracy of the existing intelligent customer service speech recognition technology.
  • SOLUTION：Nexdata annotated 1000 hours of Cantonese customer service speech data at 95% sentence accuracy rate. In order to solve the consistency of Cantonese characters, Nexdata estabilished a unified Cantonese lexicon.
Speech Recognition for Mandarin Customer Service
  • USE CASE：Speech Recognition for Mandarin Customer Service.
  • CHALLENGE：Client is developing intelligent customer service speech recognition technology from scratch.
  • SOLUTION：Nexdata provides systematic data solutions by sorting out customer scenarios, including 5,000 hours of ready-made Mandarin voice and natural conversation voice data sets, and 1,000 hours of annotated voice data sets for specific scenarios, helping customers create intelligent customer service products from scratch. , it only took a month to be put into use.
Chatbot Knowledge Base Optimization
  • USE CASE：Chatbot Knowledge Base Optimization.
  • CHALLENGE：Client wants to optimize the knowledge base of the chatbot in APP to improve the service quality.
  • SOLUTION：Nexdata expands and optimizes the new knowledge points, and deletes, adds and optimizes the similar problems in the knowledge base. We have completed the compilation of about 230,000 knowledge points and each point has been increased at least 30 similar questions.
Nexdata Data Annotation Free Trial

Supports comprehensive annotation needs for speech, image, video, point cloud, and text data.

Recommended Dataset

502 Hours - English(China) Scripted Monologue Smartphone speech dataset

English(China) Scripted Monologue Smartphone speech dataset, collected from monologue based on given scripts, covering generic domain, informal English, human-machine interaction and other domains. Transcribed with text content and other attributes. Our dataset was collected from extensive and diversify speakers(1,279 people in total, covering 7 dialect regions across China), geographicly speaking, enhancing model performance in real and complex tasks.nQuality tested by various AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

English audio recorded by Chinese speakers

222 Hours - English(Korea) Scripted Monologue Smartphone speech dataset

English(Korea) Scripted Monologue Smartphone speech dataset, collected from monologue based on given scripts, covering generic domain, human-machine interaction, smart home command and control, in-car command and control, numbers and other domains. Transcribed with text content and other attributes. Our dataset was collected from extensive and diversify speakers(505 people in total), geographicly speaking, enhancing model performance in real and complex tasks.rnQuality tested by various AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

Accent English Korea English

207 Hours - English(Canada) Scripted Monologue Smartphone speech dataset

English(Canada) Scripted Monologue Smartphone speech dataset, collected from monologue based on given scripts, covering generic domain, human-machine interaction, smart home command and control, in-car command and control, numbers and other domains. Transcribed with text content and other attributes. Our dataset was collected from extensive and diversify speakers(466 people in total), geographicly speaking, enhancing model performance in real and complex tasks.nQuality tested by various AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

Canada English Accent English asr datasets

207 Hours - English(Japan) Scripted Monologue Smartphone speech dataset

English(Japan) Scripted Monologue Smartphone speech dataset, collected from monologue based on given scripts, covering generic domain, human-machine interaction, smart home command and control, in-car command and control, numbers and other domains. Transcribed with text content and other attributes. Our dataset was collected from extensive and diversify speakers(464 people in total), geographicly speaking, enhancing model performance in real and complex tasks.nQuality tested by various AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

Accent English Japanese Japan English

10 People - British English Average Tone Speech Synthesis Corpus

10 People - British English Average Tone Speech Synthesis Corpus. It is recorded by British English native speakers, with authentic accent. The phoneme coverage is balanced. Professional phonetician participates in the annotation. It precisely matches with the research and development needs of the speech synthesis.

TTS British English Average Tone

19.46 Hours - American English Speech Synthesis Corpus-Female

Female audio data of American English,. It is recorded by American English native speaker, with authentic accent and sweet sound. The phoneme coverage is balanced. Professional phonetician participates in the annotation. It precisely matches with the research and development needs of the speech synthesis.

TTS American English Female

50 Hours - English(the United States) Emotion Scripted Monologue Microphone speech dataset

English(the United States) Emotion Scripted Monologue Microphone speech dataset, collected from monologue based on given scripts, covering 10 types of emotional scripts,such as anger, happiness, sadness, etc., matches real-world scenario. Transcribed with text content and other attributes. Our dataset was collected from extensive and diversify speakers(20 American native speakers), geographicly speaking, enhancing model performance in real and complex tasks.rnQuality tested by various AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

English emotional audio data captured by microphone emotional audio detection data English emotional audio data

90,000 sets – Multi-domain Customer Service Dialogue Text Data

Multi-domain Customer Service Dialogue Text Data, 90,000 sets in total; spanning multiple domains, including telecommunications, e-commerce, and financial, lifestyle, business, education, healthcare, and entertainment; Each set of data consists of single or multi-turn conversations; this dataset can be used for tasks such as LLM training, chatgpt

Customer Service Dialogue text data telecommunications topics data commerce topics data finance topics data LLM data Large Language Model data chatgpt data

Why Nexdata

One-stop Data Service

One-stop Data Service

Nexdata.ai provides comprehensive data
annotation and collection services to help
you succeed with your AI projects.

Data QA System

Data QA System

Nexdata delivers high-quality data with
intelligent self-inspection, multiple quality
checks, and ISO9001 certification.

Rich Annotation Tools

Rich Annotation Tools

30 proven annotation tools for full coverage of
voice, image video, 3D point cloud and text
data annotation requirements.

Compliance & Security

Compliance & Security

We follows Personal Information Protection
Act, GDPR, ISO27001/ISO27701 for security
and regulatory compliance.

AI-assisted Pre-recognition

AI-assisted Pre-recognition

With the help of AI-assisted pre-recognition
function, human-computer interaction
semi-automatic annotation is realized.

Know More About Tailored Data Solutions

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