Practice IB Computer Science (CS) Topic B.4 Communication Modelling and Simulation with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for B.4 Communication Modelling and Simulation and mirrors Paper 1, 2, 3 style where relevant.
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B. Modelling and simulation
A software engineer is designing a communication simulation for a language processing tool. The engineer must choose between a rule-based translation model and a corpus-based (statistical) translation model.
the methodology used by these two models to generate a translation.
A global media streaming service maintains a vast repository of user interaction logs, including viewing history, ratings, and device metadata. To optimize their content recommendation engine and business reporting, the service utilizes a data warehouse that supports complex analytical processing and data mining operations.
(a) how the use of a multidimensional database model (such as a star schema) improves the efficiency of complex analytical queries compared to a traditional relational database.
(b) the effectiveness of association rule mining for generating content recommendations, with specific reference to the use of support and confidence levels.
Urban planning and infrastructure development increasingly rely on computational models to handle the complexities of modern transportation. Traffic flow simulations are used to design efficient road networks and minimize congestion in growing cities.
(a) four quantitative parameters required to initialize a computer simulation of vehicle traffic at a major intersection.
(b) Propose three visual formats that could be used to present simulation results to assist engineers in identifying traffic bottlenecks.
(c) the methodology of using a stochastic computer model to determine the optimal timing for traffic light cycles at a new junction.
(d) the advantages and disadvantages of using predictive traffic simulations as the primary basis for high-cost infrastructure investments, such as new highways.
A city is planning to implement a new traffic management system using computer simulations to optimize traffic flow and reduce congestion. The system will simulate various traffic scenarios to determine the best strategies for traffic signal timings, lane usage, and incident management.
(a) the importance of using computer simulations in traffic management.
(b) how traffic simulations can be used to optimize traffic signal timings.
(c) the challenges of using simulations for traffic management.
(d) how simulations can assist in incident management and emergency response.
An engineering firm is designing an automated traffic control system where autonomous vehicles communicate with roadside infrastructure via a dedicated wireless link. To ensure safety and efficiency, the developers use a computer simulation to model the communication exchanges before physical implementation.
how this simulation can be used to predict the reliability of the system, specifically addressing how 'interference' is represented in the model and the advantages of using a simulation over real-world stress testing.
(e) the benefits and limitations of using computer simulations for traffic management compared to traditional methods.
