HabbitSentry: An AI-Powered Habit Tracking and Behavior Analysis System — A Master's Thesis Project from Vilnius Gediminas Technical University

This article introduces HabbitSentry—an intelligent habit tracking system developed by Anton Aliaksandrau, a Master's student in Artificial Intelligence Engineering at Vilnius Gediminas Technical University (GitHub project, released on June 6, 2026). Combining machine learning and behavioral science, this project explores technical architecture, AI behavior analysis capabilities, and application prospects in the health technology field, and it is the core achievement of the master's thesis.

Traditional habit tracking apps mostly stay at the level of check-in records, lacking in-depth analysis and personalized insights. With the development of AI technology, the combination of machine learning and behavioral science has become an important direction in the digital health field. As a master's thesis project, HabbitSentry aims to use AI to enhance the intelligence level of habit tracking and provide more valuable behavioral insights and recommendations.

Data Collection Layer: Collects habit execution records (time, duration, quality), context information (geographic location, weather), user feedback (mood, difficulty), and external data (steps, sleep). Preprocessing and Feature Engineering: Extract time features, encode behavior sequences, analyze periodicity, generate lag features. AI Models:

• Habit completion prediction: LSTM/GRU handle temporal dependencies, output completion probability;
• Optimal reminder recommendation: Cluster analysis of high activity periods, collaborative filtering referencing similar users, reinforcement learning to optimize strategies;
• Habit association mining: Association rules to identify sequential patterns, causal inference to distinguish correlation from causation, network analysis for key nodes.

Psychological Foundations: Integrates habit loop model (cue → behavior → reward), implementation intentions, self-efficacy theory, social cognitive theory. Personalized Interventions: Dynamically adjust target difficulty, intelligent timing reminders (avoid fatigue), multi-dimensional progress visualization (enhance motivation), failure attribution analysis (targeted recommendations).

Personal Health: Exercise habit recommendations, sleep improvement suggestions, dietary pattern warnings; Productivity: Identification of efficient work periods, recommendations for study time/rest intervals, digital detox monitoring; Medical Assistance: Chronic disease management (medication adherence), rehabilitation training tracking, mental health (emotion/behavior change identification).

Technical Innovations: Proposes new methods for behavior sequence modeling, adaptive prediction algorithms, privacy-preserving analysis frameworks; Empirical Research: Verifies the effect of AI-assisted habit formation, analyzes differences in intervention strategies, explores factors of user acceptance; Interdisciplinary Integration: Connects machine learning and behavioral science, applies health informatics theories, provides methodological guidance for digital health interventions.

Technical Enhancement: Integrate large language models (natural language interaction/personalized recommendations), multi-modal data fusion (voice/images), federated learning (training with multi-user data under privacy protection); Function Expansion: Social groups (peer motivation), gamification (points/badges), deep integration with wearable devices; Clinical Validation: Randomized controlled trials (effectiveness in real scenarios), long-term tracking (habit persistence), cost-benefit analysis.

HabbitSentry is an innovative application of AI in the digital health field, combining ML and behavioral science to provide intelligent support for habit formation. As a master's thesis project, it has both academic value and practical reference significance, demonstrating the complete process from requirement analysis to model implementation for developers and researchers in the AI+health field.