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Identifying Psychological States of Human Subjects via Machine Learning Algorithms

This research project investigates the application of artificial intelligence and machine learning techniques to the identification of human psychological states. The study collects multimodal information from participants during structured conversational interactions and combines these data with established psychological and demographic measures. The research explores whether machine learning algorithms can identify patterns associated with psychological states using behavioural, physiological and conversational information. Participants take part in structured conversations involving both artificial intelligence and another human participant. The conversational activities include emotional reflection, cognitive challenges and open-ended discussion. During the emotional reflection activity, participants discuss experiences such as happiness, stress and coping strategies. The cognitive component includes memory tasks, riddles, planning questions and problem-solving or moral-dilemma questions. The final component involves an open conversation around topics such as travel, artificial intelligence, books or films. The ChatGPT interaction is designed to provide a consistent conversational structure while allowing participants to respond naturally. The study collects several forms of multimodal data. These include voice recordings, video recordings showing participants' facial expressions, spoken conversation transcripts and EEG data. Additional demographic and lifestyle information may also be collected. The research materials describe factors such as age, marital status, weight, height, disability, smoking, drinking, academic performance, family income, family size and physical exercise. Established questionnaires are also used to obtain information about participants' experiences and psychological states. Machine learning techniques are subsequently applied to the collected datasets to identify patterns that may be associated with psychological states. The research materials describe potential applications of AI in psychological assessment, predictive analytics, emotion recognition, monitoring and prevention, personalised treatment and AI-assisted mental health support. The broader objective is to investigate whether computational approaches can contribute to earlier identification of psychological difficulties and support more accessible and personalised approaches to mental health assessment. The project also places emphasis on participant welfare, informed consent, confidentiality and secure handling of research data. Participants are informed that they can withdraw their data up to completion of the study and are provided with support information if participation raises concerns or emotional discomfort. The consent documentation confirms that participants are informed about voice, video and photographic recording, data handling and access arrangements. The supplied materials also contain separate instructions for a conversational AI study in which participants interact with ChatGPT for at least ten minutes. The interaction is recorded and the resulting conversation transcript is retained for research purposes. The project therefore provides a multimodal research setting for examining human psychological states through conversational, behavioural and machine-learning approaches.

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Artificial Intelligence

Developing an Intelligent Chatbot and Expert System for UK Train Services

This postgraduate Advanced Artificial Intelligence group project requires students to design, implement, evaluate and demonstrate an intelligent conversational system for a UK train operating company. The chatbot combines conversational AI, expert-system concepts, predictive modelling and knowledge-based reasoning to support both railway passengers and operational staff. The coursework is worth 70% of the module and is designed to develop practical experience in applying modern AI techniques to realistic service and operational problems. The first task requires the chatbot to interact with passengers, collect journey requirements such as origin, destination, date and travel time, and identify the cheapest available train ticket. Appropriate railway ticket data sources or APIs may be used, with the selected ticket presented together with access to the relevant booking service. The second task extends the system to improve customer service through train-delay prediction. The chatbot gathers information about a passenger's current train, location, delay and destination before passing these data to one or more predictive models. Students process historical railway-performance data, train and compare suitable machine-learning models, evaluate their accuracy and integrate an appropriate model into the chatbot. The third task introduces an expert system for railway contingencies. Students extract rules and operational knowledge from provided contingency and station-disruption documents and construct a knowledge base capable of advising railway staff during events such as partial or complete line blockages. The system should gather details such as event type, location, time and severity, then provide relevant operational guidance, diversion information, alternative services and passenger advice. The overall architecture may include a user interface, NLP/NLU component, knowledge base, reasoning engine, predictive model, database and optional knowledge-acquisition component. Particular emphasis is placed on context-aware dialogue, reliable reasoning, appropriate fallback responses and effective user experience. Assessment outputs include the working chatbot, source code, a live presentation and demonstration, a detailed group technical report, and an individual contribution report. Overview word count: approximately 375 words. AI-use note: pre-trained LLMs may be used as an engine within the system, but they must not be used to generate coursework code. Any use of an LLM within the solution must be clearly justified and explained in the group report.

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