8,368 Hits in 2.9 sec

Towards Reformulating Essence Specifications for Robustness [article]

Özgür Akgün, Alan M. Frisch, Ian P. Gent, Christopher Jefferson, Ian Miguel, Peter Nightingale, András Z. Salamon
2021 arXiv   pre-print
This paper addresses the problem of recovering this information automatically to increase the robustness of the quality of the output constraint models in the face of variation in the input Essence specification  ...  Essence specifications are refined into constraint models using the Conjure automated modelling tool, which employs a suite of refinement rules.  ...  In this section we describe how an Essence specification can be reformulated to recover latent attribute information that was omitted from the specification.  ... 
arXiv:2111.00821v1 fatcat:mu3efptrozdcdaakkerxw24ua4

Aristotelian essentialism: essence in the age of evolution

Christopher J. Austin
2016 Synthese  
The advent of contemporary evolutionary theory ushered in the eventual decline of Aristotelian Essentialism (AE) -for it is widely assumed that essence does not, and cannot have any proper place in the  ...  The paper contends that, properly understood, essence belongs in the age of evolution.  ...  This is a pre-print version of Aristotelian Essentialism: Essence in the Age of Evolution, Synthese (forthcoming).  ... 
doi:10.1007/s11229-016-1066-4 fatcat:wnx6jz3bdzfcvh2wfug6etiaqy

Page 1731 of Genetics Vol. 168, Issue 3 [page]

2004 Genetics  
This is in essence a consid- eration of epistasis with respect to v;.  ...  Their objec- tion was only to the specifics of Fisher’s population genetic argument.  ... 

Flexible active distribution system management considering interaction with transmission networks using information-gap decision theory

Tianyang Zhao, Jianhua Zhang, Peng Wang
2016 CSEE Journal of Power and Energy Systems  
The reactive power of each DER is managed by the ADSO in the immunity functions, which are reformulated as bi-level biobjective optimization problems.  ...  In this paper, a flexible management method is proposed for an active distribution system (ADS) with distributed energy resources (DERs) integrated, where DERs can provide spinning reserves to transmission  ...  Reformulation of IGDT Functions 1) Reformulated Robustness Function The reformulation of robustness function, (25) , is based on the concept of Pareto domination, which is widely employed in evolutionary  ... 
doi:10.17775/cseejpes.2016.00052 fatcat:3hu5qwlkgnesxkkcontwrnac2u

Toward interactive statistical modeling

Sooraj Bhat, Ashish Agarwal, Alexander Gray, Richard Vuduc
2010 Procedia Computer Science  
reformulation theorems.  ...  We present a system toward addressing these issues, which we achieve by (1) formalizing a type theory for probability and optimization, and (2) providing an interactive rewrite system for applying problem  ...  EM is numerically robust and is guaranteed to make progress toward a local maximum.  ... 
doi:10.1016/j.procs.2010.04.205 fatcat:3hz7mv46ofcfhppumm4hs5ein4

Portfolio selection under model uncertainty: a penalized moment-based optimization approach

Jonathan Y. Li, Roy H. Kwon
2012 Journal of Global Optimization  
We also show that for a wide range of specifications our proposed model can be recast as semidefinite programs.  ...  We present a new approach that enables investors to seek a reasonably robust policy for portfolio selection in the presence of rare but high-impact realization of moment uncertainty.  ...  Kim for valuable discussions to improve the initial draft.  ... 
doi:10.1007/s10898-012-9969-1 fatcat:3zg2hbklxbfhxpeaj4bnvewesy

Compact query term selection using topically related text

K. Tamsin Maxwell, W. Bruce Croft
2013 Proceedings of the 36th international ACM SIGIR conference on Research and development in information retrieval - SIGIR '13  
Many recent and highly effective retrieval models for long queries use query reformulation methods that jointly optimize term weights and term selection.  ...  Empirical evaluation using newswire and web collections demonstrates that performance of reformulated queries is significantly improved for long queries and at least as good for short, keyword queries  ...  Specifically, the most connected vertices are high frequency functional words and less frequent content-bearing words tend towards the edges of the graph [10, 11] .  ... 
doi:10.1145/2484028.2484096 dblp:conf/sigir/MaxwellC13 fatcat:4mg2edojnfgepaqqys2v242hpq

How to solve a design centering problem

Stuart M. Harwood, Paul I. Barton
2017 Mathematical Methods of Operations Research  
However, the motivation for this work relates more to engineering applications of robust design.  ...  This causes issues for many existing approaches, and so this work proposes two restriction-based approaches for solving robust design problems that are applicable to engineering problems.  ...  Approaches to robust design and design centering specific to various application domains abound. In mechanical engineering, robust design of structures is considered in [46] .  ... 
doi:10.1007/s00186-017-0591-3 fatcat:3pwv4dlo4jdnlfpivjig3ad4di

Food Reformulation for Ncd-Prevention: Regulatory Options and Potential Barriers

Jenny Claire Kaldor
2018 QUT Law Review  
While voluntary reformulation has wide support, it is criticised for being weak, ineffective and open to regulatory capture.  ...  Mandatory reformulation offers the possibility of a stronger regulatory approach and a level playing field for industry, but critics are wary of its impact on free choice.  ...  In essence, critics argue that voluntary reformulation policies are ineffective and undermined by industry conflicts of interest.  ... 
doi:10.5204/qutlr.v18i1.729 fatcat:a54iuv5nxnaunokwe7ehudx7jy

Decision making in multiobjective optimization problems under uncertainty: balancing between robustness and quality

Yue Zhou-Kangas, Kaisa Miettinen
2018 OR spectrum  
We use two measures 'price to be paid for robustness' and 'gain in robustness' to support the decision maker in considering the trade-offs between robustness and quality.  ...  Light robustness is a concept in which a parameter, tolerable degradations, can be used to control the loss in the objective function values in the most typical scenario for gaining in robustness.  ...  Dmitry Podkopaev for various discussions in formulating the investment portfolio optimization problem.  ... 
doi:10.1007/s00291-018-0540-4 fatcat:qd333lxwgvcfdipkx6euxjryxm

Towards rigorous robust optimal control via generalized high-order moment expansion

Boris Houska, Jiaqi C. Li, Benoît Chachuat
2017 Optimal control applications & methods  
robust optimal control problem.  ...  Specifically, we consider a high-order moment expansion of the time-varying uncertainty, and we bound the effect of the infinite-dimensional remainder term on the system state, in a rigorous manner, using  ...  Towards rigorous robust optimal control via generalized high-order moment expansion.  ... 
doi:10.1002/oca.2309 fatcat:rhjakgtl5vbk5dykj4ngss4wxm

Estimation and analysis of urban traffic flow

Joonsoo Lee, Alan C. Bovik
2009 2009 16th IEEE International Conference on Image Processing (ICIP)  
This paper describes methods for extracting traffic flow information from urban traffic scenes.  ...  The essence of this algorithm is to reformulate the least-squares estimation problem inside optical flow estimation problems by using a robust estimation technique.  ...  We can compute a histogram of traffic flow vectors for a short period time (1 second) and compare the histogram against the histogram previously learned for the specific traffic scene.  ... 
doi:10.1109/icip.2009.5413520 dblp:conf/icip/LeeB09 fatcat:srjnocte7jeopbdjhpp5srngda

An adjustable robust optimization approach for periodic timetabling

G.J. Polinder, Thomas Breugem, Twan Dollevoet, Gábor Maróti
2019 Transportation Research Part B: Methodological  
This class relates closely to uncertainty regions known in the robust optimization literature, and naturally defines a metric for the robustness of the timetable.  ...  The proposed solution method combines a linear decision rule with well-known reformulation techniques and cutting-plane methods.  ...  These variables are the essence of adjustable robustness: The values y i ζ together indicate how a timetable π is adjusted in order to deal with scenario ζ . • p ij for all ( i, j ) ∈ A .  ... 
doi:10.1016/j.trb.2019.07.011 fatcat:4flbu72vmjehncvwwgrqbpk7mu

Maximum correntropy criterion for robust TOA-based localization in NLOS environments [article]

Wenxin Xiong, Christian Schindelhauer, Hing Cheung So, Zhi Wang
2021 arXiv   pre-print
the squared-range-based location estimator, we follow the maximum correntropy criterion, essentially the Welsch M-estimator with a redescending influence function which behaves like ℓ_0-minimization towards  ...  Motivated by its 0 -like insensitivity toward grossly biased samples and widespread use in non-Gaussian signal processing including robust low-rank tensor recovery [29] and robust radar target localization  ...  In this section, we tackle it based on the HQ reformulation and bisection-based GTRS solution.  ... 
arXiv:2009.06032v5 fatcat:24aszmkqjjgvfnap6de4luuzee

Some comments about "Penalising model component complexity" by Simpson et al. (2017) [article]

Christian P. Robert (Université Paris-Dauphine PSL, University of Warwick), Judith Rousseau
2016 arXiv   pre-print
with other branches of the literature, we remain uncertain as to what extent the principles exposed in the paper can be developed outside specific models, given their lack of precision.  ...  While we acknowledge the highly novel approach to prior construction and commend the authors for setting new-encompassing principles that will Bayesian modelling, and while we perceive the potential connection  ...  While the authors have uncovered several interesting and new avenues for exploring prior specification, we want to signal yet another avenue, associated with the notion of Bayesian robustness, as proposed  ... 
arXiv:1609.06968v1 fatcat:dteb7sqjw5cq5oinqjygm4mpne
« Previous Showing results 1 — 15 out of 8,368 results