Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Soft constraints"”.
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Soft Constraints on Mapping Form to Meaning in Lexical Acquisition
Research in diachronic Linguistics has shown that homonyms are often avoided in language. This study proposes that this trend is a result of general cognitive principles at work during language acquisition. In support of this proposition, the first two experiments present findings demonstrating …
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Reasoning with sorted-pareto dominance and other qualitative and partially ordered preferences in soft constraints
… one. We apply Sorted-Pareto dominance to a Soft Constraints setting, where we solve problems in which the soft constraints associate qualitative preferences to decisions in a decision problem. We also examine the Sorted-Pareto dominance relation in the context of our qualitative decision …
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Planning Practical Paths in High-Dimensional Space
… practical in that they do not take into account soft application-specific constraints. This thesis integrates soft constraints in addition to the basic geometric or hard constraints in the general path planning process for high DOF robots. The practicality of paths are formulated based on the …
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Who Supports Basic Income? Constituency as a Constraint in Political Feasibility Testing
… feasibility of Basic Income by examining soft constraints, specifically, its constituency base. It inquires on the socio-economic characteristics behind public support for Basic Income through the analysis of a survey conducted in 2016. The findings provide insights on the constituency …
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Outcome prediction and structure discovery in healthcare data
… system can be overcome by methods that allow for soft constraints or promote smoothness. In this dissertation we develop three main algorithms incorporating softness or smoothness in the constraints or solution and demonstrate applications in diverse aspects of healthcare with the potential to …
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Optimization study of a trans-Atlantic abort for the U.S. space shuttle using a pseudospectral Legendre method
… solution is obtained for each abort, additional constraints on the vehicle are formulated as soft constraints in the penalty function. In particular, the third phase cost functional consists of a weighted combination of heating rate, dynamic pressure and sensed acceleration. Thus, the problem …
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A new guidance method for a DeltaV and re-entry constrained orbit transfer problem
… orbit transfer problems. In order to meet these constraints, this thesis first develops new analytic analysis of the relationship between reentry, perigee, and [delta]V. Next, a framework is developed for selecting a favorable transfer orbit while considering the various hard and soft constraints …
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Information extraction for clinical narratives
… for finding the mention types together. Soft constraints have been used while formulating the inference tasks. Softening the constraints is helpful because it allows the constraints to be violated during inference. Joint formulation is based on the fact that only local models are learned …
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Generative Modeling with Guarantees
… the generation of text conditionally using hard constraints, allowing users to specify certain elements in advance while leaving others open for the model’s prediction. By facilitating interactive editing and rewriting, this framework provides users with precise control over the generated text. …
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Managing radiotherapy treatment trade-offs using multi-criteria optimisation and data envelopment analysis
… set of non-dominated points. The delivery constraints are considered in the column generation process. Essentially, the method generates a set of deliverable plans featuring a range of treatment trade-offs. Demonstrated by a prostate case, the method generates near-optimal plans that can be …
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Institutional Frictions & Policy Constraints in Macroeconomic Transmission: Essays in Macroeconomics, Monetary & Fiscal Policy, and DSGE Business Cycle Modelling
… an array of institutional frictions and policy constraints -- on the back of the organising sub-literatures surveyed in the introduction -- critically moot in the New Keynesian (NK) architecture traditionally underpinning macro-forecasting and policy analysis. Taking stock, the chapters …
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Managing Constraints and Preferences: Constrained Tradeoffs-Enhanced Conditional Preference Networks (CTCP-NETS)
… 2. TCP-Nets only deal with preferences (soft constraints). Hard constraints are not considered. This is a real limitation when dealing with a wide variety of real life problems. Due to the above limitations, we propose a new model integrating TCP-Nets with the well known Constraint …
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Synthetic morphogenesis : space, time, and deformation
… of distributed constraint propagation, now using soft constraints. I explore some of the resulting phenomena and then apply the mechanism to crafting surface geometries, where self-correction makes the process robust to both damage and self-deformation. I conclude with a look at how this naturally …
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Explainable Machine Learning Prediction of Antimicrobial Peptide Targeting Streptococcus mutans
… discovery by integrating explicit generation constraints into a pipeline that uses variational autoencoder (VAE) sampling, genetic algorithm (GA) optimization, and guided decoding to generate new peptide candidates. Our ML design combines the distinct phases through VAE sampling which creates …
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Cooperative Push/Pull Protocols for Live Peer-Assisted Streaming
… challenge, in particular when real-time (hard or soft) constraints are part of the service quality, as in TV distribution or conferencing. This thesis deals with P2P live streaming, concentrating on unstructured, swarm-based systems. The protocols explored and proposed are based in general on …
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Health-aware, Explainable, and Behaviour-Changing Food Recommendation
… daily meal plans, supports multiple nutrient constraints, and produces path-grounded explanations. It expands its baseline PFoodReq by those features, but also inherits scalability issues and enforces soft constraints. We then propose the FoodRAG architecture, an LLM-based, agentic, modular …
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Constrained word alignment models for statistical machine translation
… alignment models with linguistically motivated constraints in a bid to improve the quality of word alignment for Phrase-Based SMT systems (PB-SMT). We start the exploration with an investigation into segmentation constraints for word alignment by proposing a novel algorithm, namely word packing, …
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Development of a hybrid genetic algorithm based decision support system for vehicle routing and scheduling in supply chain logistics managment
… to realise non-linearity within objectives and constraints defined for VRS problems. Furthermore, there are no clear distinctions between hard and soft constraints considered in these methods. Finally, the existing approaches fail to capture stochastic and dynamic nature of the logistics …
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Scheduling of track inspection and maintenance activities in railroad networks
… to be scheduled subject to many difficult side constraints such as periodicity constraints and discrete working time constraints. A vehicle routing problem formulation was proposed for TISP, and a customized heuristic algorithm was developed to solve the model. The algorithm iteratively applies …
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A Reactive Search Optimization approach to interactive decision making
… insufficient or costly knowledge elicitation, soft constraints which are in the mind of the decision maker, revision of preferences after becoming aware of some possible solutions, etc. The work developed in the thesis can be classified within the well known paradigm of Interactive Decision …
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