IMM Flashcards
What is the purpose of the Interacting Multiple Model (IMM) algorithm in state estimation for maneuvering targets?
The IMM algorithm efficiently manages multiple filter models to achieve accurate state estimation of targets with changing dynamics.
What does the IMM algorithm combine to get a better state estimate?
The IMM algorithm combines state hypotheses from multiple filter models.
How does the IMM handle model management?
The IMM uses an underlying Markov chain to control switching behavior among the multiple models.
What is the state representation of a linear system in discrete time?
The state representation is given by: (X_{k+1} = \Phi_k X_k + w_k), where (X_k) is the state estimate, (\Phi_k) is the state transition matrix, and (w_k) represents system process noise.
What challenges do users with cognitive impairments and learning difficulties face? How can design support such users?
Users with cognitive impairments and learning difficulties face challenges related to memory, attention, and processing information. Design should consider clear and simple interfaces, consistent layouts, and support for alternative input methods.
What is the structure of questionnaires used in evaluation processes? What are the pros and cons of using questionnaires?
Questionnaires typically consist of structured questions with predefined response options. Pros include scalability and ease of data collection, while cons include potential bias and limited depth of understanding.
What are formative and summative evaluations? When are they used in the design process?
Formative evaluation assesses design during development to improve it, while summative evaluation assesses the final product’s effectiveness. Formative evaluation is used iteratively, while summative evaluation occurs at the end of the design process.
Explain the concepts of personae and scenario development in the design process.
Personae represent fictional user archetypes, helping designers understand user needs. Scenarios describe specific interactions or tasks within the system, aiding in design decisions.
Compare Hierarchical Task Analysis (HTA) and Use Case techniques.
HTA breaks down tasks hierarchically, focusing on task structure. Use Cases describe interactions between actors and the system, emphasizing system behavior.
What strategies can interface designers use to support users with disabilities?
Designers can provide alternative input methods (e.g., voice control), ensure compatibility with assistive technologies, and follow accessibility guidelines.
