• The SPACE (Stochastic Population Analysis for Complex Events) program is a collection of PC SAS® programs to estimate multi-state life table (MSLT) functions via microsimulation, and their sampling variability via a special bootstrap approach. (cdc.gov)
  • Cai, Schenker and Lubitz (2006) extended this model to data without known values of duration by using the stochastic EM (Expectation-Maximization) algorithm. (cdc.gov)
  • Microsimulation "expresses" the transition probability estimates by generating detailed life paths for each member of the target population, thus offering users much greater flexibility in the characterization of the underlying stochastic process than other deterministic approaches. (cdc.gov)
  • Once again a stochastic approach has been taken over a more conventional method (such as finite differences or finite elements), because it is easy to program and scales extremely well. (scientific-computing.com)
  • Different deterministic and stochastic optimization schemes are available. (onepetro.org)
  • Typical stochastic approaches are: evolutionary algorithms, neural network approaches, particle swarm algorithms or the Fuzzy logic theory based methods. (onepetro.org)
  • This two-dimensional discrete signal is modeled by a novel hybrid approach, which includes both deterministic and stochastic processes. (aece.ro)
  • This paper describes a practical approach for implementing stochastic determination of gob gas ventholes production performances and for generalizing the prediction capability of deterministic models. (cdc.gov)
  • then, we end up having to estimate a small set of parameters, well describing the data (if viewed as a realization of a stochastic pro- cess), instead of a large number of deterministic unknowns (if viewed as a sequence of samples). (lu.se)
  • Such metaheuristics include ant colony optimization, evolutionary computation such as genetic algorithm or evolution strategies, particle swarm optimization, rider optimization algorithm and bacterial foraging algorithm. (wikipedia.org)
  • A fuzzy programming model and a genetic algorithm are developed to solve the proposed model with different sizes. (hindawi.com)
  • This paper proposes to apply the genetic algorithm and the firefly algorithm to enhance the estimation of the direction of arrival (DOA) angle of electromagnetic signals of a smart antenna array. (scirp.org)
  • Their typical similarity metric is modified to a weighted Euclidean metric and automatically adjusted by a genetic algorithm, a heuristic search (optimization) technique. (bvsalud.org)
  • However, the trees are constructed in a very different way: each node independently carries out a deterministic tree construction algorithm when it receives a membership update. (usenix.org)
  • The probabilistic model considers multiple sources of error in radar QPE as well as the impacts of correction algorithms on the radar signal. (confex.com)
  • This approach preserves the fine space/time sampling properties of the radar and conditions probabilistic QPE on the precipitation rate and precipitation type when computing probabilistic quantitative precipitation estimates (PQPE). (confex.com)
  • The total decompression time was based upon the gas content (dissolved gas), VVAL18 Thalmann algorithm which formed the baseline by which to compare a deep stop schedule as generated by the probabilistic BVM(3) bubble model. (gue.com)
  • A combination of deterministic modeling, a probabilistic approach, and six artificial intelligence algorithms was employed to determine health risk assessments. (bvsalud.org)
  • METHODS: Results from PPRL were compared to results from an established linkage method, which uses unencrypted (plain text) identifiers and both deterministic and probabilistic techniques. (cdc.gov)
  • Moreover, we give a polynomial time adaptive algorithm that shows that our bound is tight up to a small additive term. (deepai.org)
  • In addition, we study polynomial time constructive algorithms. (deepai.org)
  • We use existing polynomial time constructible expander regular bipartite graphs, extractors and condensers to construct two polynomial time algorithms. (deepai.org)
  • Techniques which constitute metaheuristic algorithms range from simple local search procedures to complex learning processes. (wikipedia.org)
  • Metaheuristic algorithms are approximate and usually non-deterministic. (wikipedia.org)
  • The metaheuristic algorithms present better performance than the well-known MUSIC algorithm. (scirp.org)
  • Filho, G.L., Rezende, A.C.B., Cruz, L.F., Vieira, F.H.T. and Lemos, R.P. (2020) 2-D DOA Estimation in a Cuboid Array Based on Metaheuristic Algorithms and Maximum Likelihood. (scirp.org)
  • These upper bounds are important for the termination of spatial branch-and-bound algorithms. (optimization-online.org)
  • We bring lower and upper bounds on the number of tests required in both the adaptive and the non-adaptive deterministic settings given an upper bound D on the defectives number. (deepai.org)
  • Compared to optimization algorithms and iterative methods, metaheuristics do not guarantee that a globally optimal solution can be found on some class of problems. (wikipedia.org)
  • In combinatorial optimization, by searching over a large set of feasible solutions, metaheuristics can often find good solutions with less computational effort than optimization algorithms, iterative methods, or simple heuristics. (wikipedia.org)
  • By a judicious choice of parameter representations and the use of incremental matrix inversion, an efficient iterative algorithm is constructed that is several orders of magnitude faster than MC methods.The method is explored numerically at realistic temperatures with results that agree within 5 % with those of MC calculations. (lu.se)
  • Dr. Ranjan is primarily interested in the development of efficient algorithms and bioinformatics tools for solving biologically important problems. (odu.edu)
  • The first objective of this article is to propose a way to incorporate fuzzy sets theory into lotsizing algorithms for the case of uncertain demand in a fuzzy master production schedule. (emerald.com)
  • Abstract It has commonly been assumed that the Border Gateway Protocol (BGP) is a tool for distributing reachability information in a manner that creates forwarding paths in a deterministic manner. (ietf.org)
  • 2 years of age shortly after duplicate records, we used a deterministic record linkage the first year of vaccination ( 11 - 14 ). (cdc.gov)
  • Privacy-preserving record linkage (PPRL) is an alternative to traditional linkage approaches that may overcome this barrier. (cdc.gov)
  • however relatively high computation power is needed for image processing algorithms to estimate position and implementation of optical tags is commonly required in the area of positioning [ 14 , 15 ]. (hindawi.com)
  • The SPACE program uses a special bootstrap approach to estimate survey design-adjusted variance for MSLT functions. (cdc.gov)
  • Algorithms for Handoff Minimization in Wireless Networks[J]. Journal of Computer Science and Technology, 2019, 34(4): 887-900. (ict.ac.cn)
  • Ant colony optimization, particle swarm optimization, social cognitive optimization and bacterial foraging algorithm are examples of this category. (wikipedia.org)
  • Instead, we have been forced to investigate a different algorithm known as particle swarm. (scientific-computing.com)
  • The purpose of a deterministic system lies in its predictability and reliability, making it an essential aspect of various modern-day technologies and computational applications. (devx.com)
  • However, its performance on modern multi-core processors is streets ahead of our traditional approach and so we're going to have to adapt our software development processes to incorporate it. (scientific-computing.com)
  • The technology term "Deterministic System" is important because it plays a crucial role in ensuring predictability, reliability, and stability within various technological and scientific processes. (devx.com)
  • The deterministic approach is an essential aspect of producing repeatable results and guaranteeing that processes execute in the expected manner, thereby reducing the potential for errors and enhancing system performance. (devx.com)
  • For instance, control algorithms in automation systems use deterministic behavior to ensure accuracy and safety in industrial processes. (devx.com)
  • By eliminating the element of randomness and uncertainty, deterministic systems enable researchers and developers to establish a more solid understanding of their subject matter, making it possible to devise better solutions and achieve more accurate forecasts. (devx.com)
  • This algorithm splits the region under consideration into boxes that are either discarded because they can't hold the optimal value, or are further sub-divided because they might do. (scientific-computing.com)
  • Most of the repair approaches described in the literature produce repairs that are not optimal, in the sense that they do not guarantee that only a minimal set of consequences is removed. (easychair.org)
  • In a series of papers, we have developed an approach for computing optimal repairs, starting with the restricted setting of an EL instance store, extending this to the more general setting of a quantified ABox (where some individuals may be anonymous), and then adding a static EL TBox. (easychair.org)
  • In the first case, we propose an optimal competitive ratio algorithm for the problem. (ict.ac.cn)
  • However, without connectivity assumption, we present an optimal deterministic algorithm with the competitive ratio of n Δ for this problem under online setting, where n is the number of users and Δ is the maximum number of access points which cover any single point in the environment. (ict.ac.cn)
  • A dynamic programming algorithm for finding the optimal placement of a secondary structure topology in Cryo-EM data. (odu.edu)
  • Among the algorithms assessed for HQ prediction, Gaussian Naive Bayes (GNB) was optimal for children and eXtreme Gradient Boosting (XGB) for adults, with nitrate concentration being a key determinant. (bvsalud.org)
  • For this reason, an approach was tested to develop synthetic data that uses models from survival analysis to replace vital status and actual dates-of-death with synthetic values and uses classification tree analysis to replace actual causes of death with synthesized causes of death. (cdc.gov)
  • Quality-Diversity algorithms, such as MAP-Elites, are a branch of Evolutionary Computation generating collections of diverse and high-performing solutions, that have been successfully applied to a variety of domains and particularly in evolutionary robotics. (imperial.ac.uk)
  • If you prefer seeing the algorithm in code, you can find Finagle's Scala implementation here . (twitter.com)
  • CONCLUSION: The results from this study are encouraging for first steps for a statistical agency in the implementation of PPRL approaches, however, future research is still needed. (cdc.gov)
  • Ranjan, D. "ABI Innovation: Advanced Informatics and Eective Algorithms for Improved CryoEM Protein Structure Prediction and Density Analysis" $589,703. (odu.edu)
  • We provide a lower bound of 4.967 on the competitive ratio of any such deterministic algorithm, and hence show that future improvements will have to store in memory a set of edges which is not necessarily a feasible matching. (arxiv.org)
  • Also, we prove that the randomized version of the algorithm achieves an expected competitive ratio of O (log Δ). (ict.ac.cn)
  • In computer science and mathematical optimization, a metaheuristic is a higher-level procedure or heuristic designed to find, generate, tune, or select a heuristic (partial search algorithm) that may provide a sufficiently good solution to an optimization problem or a machine learning problem, especially with incomplete or imperfect information or limited computation capacity. (wikipedia.org)
  • A hybrid metaheuristic is one that combines a metaheuristic with other optimization approaches, such as algorithms from mathematical programming, constraint programming, and machine learning. (wikipedia.org)
  • Deterministic systems can be modeled and simulated using a variety of techniques, including mathematical equations, algorithms, and computer programs, allowing for better understanding, optimization, and control of these systems. (devx.com)
  • The graphical composition style inspires to think in minimal musical patterns, but introduces a high complexity of possible outcomes from the non-deterministic algorithm. (midi.org)
  • Deterministic systems allow for reliable and consistent outcomes, making them widely used in computing, engineering, and scientific modeling. (devx.com)
  • Deterministic systems have predictable outcomes, as they follow a well-defined sequence of states or actions based on initial conditions and governing rules. (devx.com)
  • In a deterministic system, the outcomes are solely determined by the initial conditions and the set rules governing the system, leaving no room for randomness or chance. (devx.com)
  • In a deterministic system, every action or function consistently produces specific outcomes, which are solely dependent on the current system state and input parameters. (devx.com)
  • Diverse optimization algorithms generate iterates in discrete time that are eventually confined to identifiable sets. (optimization-online.org)
  • The deterministic process is modeled by two-dimensional discrete cosine transform. (aece.ro)
  • The DRL controller is a model-free off-policy actor-critic algorithm in which learning is based on temporal difference (TD) error [1] and Deterministic Policy Gradient (DPG) theorem [4]. (aiche.org)
  • This paper proposes two different approaches for the identification of a monitoring system in SNs. (iwaponline.com)
  • In practice, the method of feasible string-search algorithm may be affected by the string encoding. (wikipedia.org)
  • In addition, we study preemptive online algorithms, a sub-class of one-pass algorithms where we are only allowed to maintain a feasible matching in memory at any point in time. (arxiv.org)
  • To address the absence of a commercial software tool that can quickly size an energy system incorporating HEST while using limited data, a deterministic modeling approach that enables a quick initial sizing of hybrid renewable hydrogen energy systems (HRHES) is given in this chapter. (intechopen.com)
  • It's not always finding algorithm like A* that decide what AI should do, usually for games with too many possiblities they use some state-machine that controls the actions and those search algorithm are used both to describe how choosed action should be done and to extrant usable information from all the game data. (stackexchange.com)
  • Given a string X of length n on alphabet σ, the FM-index data structure allows counting all occurrences of a pattern P of length m in O(m) time via an algorithm called backward search. (dagstuhl.de)
  • They extend existing QD methods to use gradients for efficient exploitation and leverage perturbations in imagination for efficient exploration.Our approach takes advantage of the effectiveness of QD algorithms as good data generators to train deep models and use these models to learn diverse and high-performing populations. (imperial.ac.uk)
  • however, to develop different algorithms, we do need to make some assumptions on the properties of the data. (lu.se)
  • Probability distributions of precipitation rates are computed instead of deterministic values using models quantifying the relation between radar reflectivity and the corresponding true precipitation. (confex.com)
  • Capacity control includes several models, algorithms, and policies that allocate seats to maximize expected profits [ 3 ]. (hindawi.com)
  • Understanding and implementing deterministic systems is vital across various fields, including engineering, computer science, physics, and mathematics, as it allows for the creation of accurate models, simulations, and optimization techniques, ultimately driving the development of innovative and effective solutions. (devx.com)
  • Similarly, engineers and scientists utilize deterministic models to study and predict the behavior of physical systems, such as weather patterns, fluid dynamics, or the growth of populations. (devx.com)
  • PBPK models essentially represent a systems biology approach to the study of ADME and are increasingly finding use in screening-level as well as quantitative risk assessments to reduce the uncertainties associated with interspecies, route-to-route, and high-dose to low-dose extrapolations of tissue dose of chemicals [21-24]. (cdc.gov)
  • Pauline's research focuses on building such models through a physics-informed learning based approach, taking advantage of the available measurements. (lu.se)
  • Despite the fact that SOMs are a class of artificial neural networks, they are radically different from the neural model usually employed in Business and Economics studies, the multilayer perceptron with backpropagation training algorithm. (bvsalud.org)
  • Quality-Diversity (QD) algorithms are designed to generate collections of high-performing solutions while maximizing their diversity in a given descriptor space. (imperial.ac.uk)
  • Most literature on metaheuristics is experimental in nature, describing empirical results based on computer experiments with the algorithms. (wikipedia.org)
  • 1. Introduction It has commonly been assumed that the Border Gateway Protocol (BGP) [RFC1771] is a tool for distributing reachability information in a manner that creates forwarding paths in a deterministic manner. (ietf.org)
  • Popular deterministic approaches are: response surface methods, hill climbing methods or gradient based strategies. (onepetro.org)
  • Instead, we can sometimes rely on enlarged generalized gradients called "conservative fields", defined through the natural path-wise chain rule: one application is the convergence analysis of gradient-based deep learning algorithms. (optimization-online.org)
  • Since the scalability of compliance checking is a major requirement in this area, these results justify an ad-hoc, low complexity approach to encoding sticky policies. (easychair.org)
  • The performance of each lot‐sizing algorithm was calculated over nine examples. (emerald.com)
  • One approach is to characterize the type of search strategy. (wikipedia.org)
  • One type of search strategy is an improvement on simple local search algorithms. (wikipedia.org)
  • A well known local search algorithm is the hill climbing method which is used to find local optimums. (wikipedia.org)
  • On the other hand, Memetic algorithms represent the synergy of evolutionary or any population-based approach with separate individual learning or local improvement procedures for problem search. (wikipedia.org)
  • An example of memetic algorithm is the use of a local search algorithm instead of or in addition to a basic mutation operator in evolutionary algorithms. (wikipedia.org)
  • In particular, if a variable-width encoding is in use, then it may be slower to find the N th character, perhaps requiring time proportional to N . This may significantly slow some search algorithms. (wikipedia.org)
  • For example, a few years ago NAG implemented a suite of software for solving global optimisation problems, based on an algorithm called multi-level coordinate search. (scientific-computing.com)
  • Has anyone tried to develop, or know of an algorithm such as used in a typical turn based game like Advance Wars , where the number of objects and the number of moves per object may be too large to search through up to a reasonable depth like one would do in a game with a smaller search base like chess? (stackexchange.com)
  • We demonstrate that they outperform baseline RL approaches on tasks with deceptive rewards, and maintain the divergent search capabilities of QD approaches while exceeding their performance by ∼ 1.5 times and reaching the same results in 5 times less samples. (imperial.ac.uk)
  • However, MAP-Elites performs a divergent search based on random mutations originating from Genetic Algorithms, and thus, is limited to evolving populations of low-dimensional solutions. (imperial.ac.uk)
  • This physically conditioned approach can readily apply to other systems including space-based passive sensor algorithms. (confex.com)
  • It is shown that the fuzzy sets theory approach provides a better representation of fuzzy demand and more information to aid the determination of lot size. (emerald.com)
  • With reference to both a benchmark and a real SN, the comparison between the results achieved by both strategies indicates that the two approaches provide comparable solutions in terms of sensor location. (iwaponline.com)
  • Despite being based on different concepts, the two approaches provide comparable results. (iwaponline.com)
  • Results show that the proposed algorithm can obtain a suitable solution in a reasonable amount of time. (hindawi.com)
  • The results indicate that the part‐period balancing algorithm may be a better overall choice to determine lot sizes. (emerald.com)
  • For the adaptive deterministic settings, our results show that, any algorithm for estimating the defectives number up to a multiplicative factor of Δ must make at least Ω((D/Δ^2)log (n/D) ) tests. (deepai.org)
  • RESULTS: The match rates for all approaches were similar, 5.1% for the gold standard, 5.4% for the initial PPRL and 5.0% for the refined PPRL approach. (cdc.gov)
  • The results can be arXiv:1908.03331v1 [hep-ph] 9 Aug 2019 used as model-independent short-distance constraints for the very many different approaches to the HLbL contribution. (lu.se)
  • In this thesis we take special care in designing a validation protocol for each approach proposed and we contribute to the in vivo dynamics validation with a quantitative and objective score to measure the amount of motion suppressed. (uab.es)
  • The objective of this thesis is to develop and validate robust approaches for the semi-automatic extraction of road networks in dense urban areas from very high resolution (VHR) optical satellite images. (inria.fr)
  • We investigate practical algorithms for inconsistency-tolerant query answering over prioritized knowledge bases, which consist of a logical theory, a set of facts, and a priority relation between conflicting facts. (easychair.org)
  • As such, they are useful approaches for optimization problems. (wikipedia.org)
  • Quantum computing offers a potentially fast approach to difficult optimization problems. (lu.se)
  • of STACS2008, pages 669-680) by devising a deterministic approach whose performance guarantee is 4.91+epsilon. (arxiv.org)
  • In this paper we will propose algorithm which will reduce time needed for position estimation and thus allow higher scalability of the modular system and thus allow providing positioning services to higher amount of users. (hindawi.com)
  • The DOA estimation performance of the proposed algorithm was compared to that of MUSIC on different two dimensions scenarios. (scirp.org)
  • The authors in [3] [4] present an approach for DOA estimation based on the maximum likelihood estimator. (scirp.org)
  • However, in the second case, having the connectivity assumption, that is, "if a user is connected to an access point so long that the received signal strength of the access point is not less than a specified threshold, the user should continue his/her connection", we prove that no approach can reduce the number of unnecessary handoffs in an offline setting. (ict.ac.cn)
  • These techniques exhibit satisfactory performance when compared to other well-known algorithms in the field. (scirp.org)
  • Most of the literature published regarding the performance of lot‐sizing algorithms has been in a deterministic environment. (emerald.com)
  • Many of our existing algorithms are inherently sequential or, even if they do parallelise, they don't scale up to exploit the tens and hundreds of cores that we will have at our disposal in a few years' time. (scientific-computing.com)
  • Attempts to parallelise this algorithm failed, because all threads have to continually update each other on their progress, or lack of it, and the communication overhead swamps the computation time. (scientific-computing.com)
  • Software that makes the most of such hardware must itself be a hybrid, and ideally should be able to adapt to the particular platform that it is running on and choose the best algorithm to use given the resources available at any given time. (scientific-computing.com)
  • Nonetheless, the additional time when compared to a common deep-stop, gradient approach of 20/85 resulted in 59 minutes of additional "deep stop" minutes, eliciting reasonable discontent among some. (gue.com)
  • Unlike other multicast systems, it avoids the cost of using distributed algorithms to construct and maintain trees. (usenix.org)
  • There is no randomness or chance in deterministic systems, meaning that their future state is fully determined by their current state and any external factors acting upon the system. (devx.com)
  • Elevator Control Systems: Deterministic elevator control systems follow a fixed set of rules to manage the operation of elevators in a building. (devx.com)
  • Taking a practical approach to education, you are encouraged to build and analyse systems and software, as well as work with end-user feedback to refine and adapt solutions. (lancaster.ac.uk)
  • Taking a systems approach, you will explore topics such as cryptography and secure distributed systems and networking. (lancaster.ac.uk)
  • Drawing on the expertise of our NCSC Academic Centre of Excellence in Cyber Security Research, in the third year you will learn about advanced topics, such as adversarial AI, security issues of large scale cyber physical systems such as critical national infrastructures (utilities), and advances in approaches to cyber investigations and security analysis. (lancaster.ac.uk)
  • In computer science , string-searching algorithms , sometimes called string-matching algorithms , are an important class of string algorithms that try to find a place where one or several strings (also called patterns) are found within a larger string or text. (wikipedia.org)
  • This PQPE approach provides the basis for precipitation probability maps and the generation of radar precipitation ensembles. (confex.com)
  • In this memo we will describe a class of BGP configurations for which there is more than one potential outcome, and where forwarding states other than the intended state are equally stable, and that the stable state where BGP converges may be selected by BGP in a non-deterministic Griffin & Huston Expires December 12, 2005 [Page 1] Internet-Draft BGP Wedgies June 2005 manner. (ietf.org)
  • With this versatile toolkit, Senode bridges the gap between traditional tempo-based music sequencers and more complex modular setups using its simple graphical approach and great interactivity. (midi.org)
  • Furthermore, we introduce a deterministic-statistical method for automatic vessel borders detection. (uab.es)
  • Even in the convex case, the subgradient method is very slow, and while some cutting plane algorithms, including traditional bundle methods, are popular in practice, local convergence is still sluggish. (optimization-online.org)
  • Non-carcinogenic risk assessment was performed using the hazard quotient (HQ) method, while the carcinogenic risk assessment utilized the excess lifetime cancer risk approach. (bvsalud.org)
  • A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications. (mdpi.com)
  • This paper describes a case study using a supervised machine learning algorithm, known as the Sequential Coverage Algorithm (SCA). (cdc.gov)
  • A deterministic algorithm for calculating polymer properties is presented. (lu.se)
  • An accurate validation protocol to ensure reliable clinical applicability of the methods is a crucial step in any proposal of an algorithm. (uab.es)
  • The second approach is based on the complex network theory (CNT) tools, adopting the in-relevance-based harmonic centrality, and does not require any hydraulic simulation. (iwaponline.com)
  • a plug-and-play approach that improves the reproducibility of the solutions present in an archive. (imperial.ac.uk)
  • We study the maximum weight matching problem in the semi-streaming model, and improve on the currently best one-pass algorithm due to Zelke (Proc. (arxiv.org)