While conversational AI offers a simplified approach to communicating with machines, the technologies that support this approach are anything but rudimentary. To allow digital systems to understand and respond to natural human communication, conversational AI builds upon the following:
Machine learning
Machine learning allows systems to learn from data and improve over time. ML algorithms process large amounts of data from previous interactions to identify patterns and predict user needs. This continuous learning process helps conversational AI systems become more accurate and efficient in understanding and responding to user inputs.
Speech recognition
Speech recognition technology allows conversational AI systems to convert spoken language into text. This is crucial for voice-based interactions, such as those with virtual assistants like Siri or Alexa. Speech recognition systems interpret spoken words, recognise different accents and dialects and convert them into a format that the AI system can process.
Dialogue manager
The dialogue manager is responsible for ensuring the natural flow of the conversation, tracking what has already been said and making sure that the ongoing conversation makes sense. To do this, it incorporates the current intent of the user along with any additional personal or historical context. Thanks to dialogue management, AIs can follow discussions and respond logically—asking for clarification, restating details for confirmation, naturally transitioning back and forth between topics or adjusting responses based on evolving user input.
Natural language processing
Natural language processing is the foundation of conversational AI. NLP helps conversational AI systems manage various linguistic features such as sentence structure, grammar exceptions, idiomatic expressions—even sarcasm. Machine learning algorithms within NLP continuously learn from vast amounts of textual data, recognising diverse linguistic patterns and nuances.
Natural language understanding
Natural language understanding (NLU) is a subset of NLP focused specifically on comprehension. It enables the AI system to understand the intent behind the user's input. NLU differentiates between various meanings of similar phrases based on context and user intent. This understanding is crucial for determining the appropriate response and ensuring the system can handle complex and ambiguous queries effectively.
Natural language generation
Natural language generation (NLG) is the process of constructing coherent and contextually appropriate responses in human language. Once the system understands the user's intent through NLU, natural-sounding replies are generated using NLG. These responses are designed to be relevant, clear and human-like, enhancing the interaction's overall quality and making the AI appear more conversational and engaging.