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Ecosystem Health and Its Measurement at Landscape Scale: Toward the Next Generation of Quantitative Assessments

Ganapati P. Patil, Robert P. Brooks, Wayne L. Myers, David J. Rapport, Charles Taillie
2001 Ecosystem health  
The purpose of this paper is twofold: (A) to describe the challenges of reporting on changes in ecosystem health at landscape scales, and (B) to review the statistical and mathematical techniques that  ...  HIERARCHICAL STRUCTURE ANALYSIS Trees and other nodal graph structures arise in the map modeling, echelons, and poset components of MARMAP. Also important is the coupling of related structures.  ...  First, model fitting provides a set of estimated parameter values characterizing the spatial structure of the map (landscape).  ... 
doi:10.1046/j.1526-0992.2001.01034.x fatcat:f2asqyk2vffgtp6wkboihw3nxq

Introducing the Dahu Pseudo-Distance [chapter]

Thierry Géraud, Yongchao Xu, Edwin Carlinet, Nicolas Boutry
2017 Lecture Notes in Computer Science  
The minimum barrier (MB) distance is defined as the minimal interval of gray-level values in an image along a path between two points, where the image is considered as a vertex-valued graph.  ...  In this paper, based on the discrete set-valued continuity setting, we present a new discrete definition for this distance, which is compatible with this interpretation, while being free from digital topology  ...  Najman for their valuable comments on an erstwhile version of this paper, and the reviewers for their helpful remarks.  ... 
doi:10.1007/978-3-319-57240-6_5 fatcat:iy5tzjvijnhrlblzyhssuj6jqy

Comparing mutational pathways to lopinavir resistance in HIV-1 subtypes B versus C

Susana Posada-Céspedes, Gert Van Zyl, Hesam Montazeri, Jack Kuipers, Soo-Yon Rhee, Roger Kouyos, Huldrych F. Günthard, Niko Beerenwinkel, Sergei L. Kosakovsky Pond
2021 PLoS Computational Biology  
Here, we present a methodology for the comparison of mutational networks in different HIV-1 subtypes, based on Hidden Conjunctive Bayesian Networks (H-CBN), a probabilistic model for inferring mutational  ...  The inferred mutational networks for subtype B versus C are significantly different sharing only five constraints on the order of accumulating mutations with mutation at residue 54 as the parental event  ...  In other comparative studies using data simulated under various fitness landscapes, H-CBN models typically provide comparable or better performance to competitors such as CAPRI [33] and trees [33, 34  ... 
doi:10.1371/journal.pcbi.1008363 pmid:34491984 pmcid:PMC8448360 fatcat:s2gh24w5brdkbbjedohpfgjzpu

Comparing mutational pathways to lopinavir resistance in HIV-1 subtypes B versus C [article]

Susana Posada-Céspedes, Gert Van Zyl, Hesam Montazeri, Jack Kuipers, Soo-Yon Rhee, Roger Kouyos, Huldrych F. Günthard, Niko Beerenwinkel
2020 bioRxiv   pre-print
Here, we present a methodology for the comparison of mutational pathways in different HIV-1 subtypes, based on Hidden Conjunctive Bayesian Networks (H-CBN), a probabilistic model for inferring mutational  ...  We introduce a Monte Carlo sampling scheme for learning H-CBN models on a large number of resistance mutations and develop a statistical test to assess differences in the inferred mutational pathways between  ...  First, the genetic barrier to lopinavir resistance appears to be 542 high. Barber et al.  ... 
doi:10.1101/2020.09.25.312942 fatcat:d2o5kdx7ureevcdphz7ej5acky

Prediction of RNA secondary structures: from theory to models and real molecules

Peter Schuster
2006 Reports on progress in physics (Print)  
Efficient folding algorithms based on dynamic programming are available for the prediction of secondary structures for given sequences.  ...  A comprehensive theory of RNA structure is presented, which is based on the concepts of sequence space and shape space, being a space of structures.  ...  The notion of barrier trees, in particular those of local minima, saddles and basins, can be extended to landscapes built upon partially ordered sets (posets) [112] .  ... 
doi:10.1088/0034-4885/69/5/r04 fatcat:7yi4rafhgbdy7ixkbrtc43illu

An Introduction to Multiparameter Persistence [article]

Magnus Bakke Botnan, Michael Lesnick
2022 arXiv   pre-print
Multiparameter persistence has become one of the most active areas of research within TDA, with exciting progress on several fronts.  ...  In topological data analysis (TDA), one often studies the shape of data by constructing a filtered topological space, whose structure is then examined using persistent homology.  ...  We especially thank our past and current collaborators in this area, who have had a major influence on this article.  ... 
arXiv:2203.14289v1 fatcat:ylrfxfdljrcidondwsiiqytea4

Lower Bounds for Maximal Matchings and Maximal Independent Sets

Alkida Balliu, Sebastian Brandt, Juho Hirvonen, Dennis Olivetti, Mikael Rabie, Jukka Suomela
2019 2019 IEEE 60th Annual Symposium on Foundations of Computer Science (FOCS)  
The lower bound by Linial (1987 Linial ( , 1992 shows that the dependency on n is optimal: these problems cannot be solved in o(log * n) rounds even if ∆ = 2.  ...  However, the dependency on ∆ is a long-standing open question, and there is currently an exponential gap between the upper and lower bounds. We prove that the upper bounds are tight.  ...  Acknowledgments We would like to thank Mohsen Ghaffari for pointing out that the randomized lower bound implies a better deterministic lower bound, and Seth Pettie for pointing out that the bound is tight for trees  ... 
doi:10.1109/focs.2019.00037 dblp:conf/focs/Balliu0HORS19 fatcat:atzpz7b57nec7jeyfqjjtzlham

Comparing mutational pathways to lopinavir resistance in HIV-1 subtypes B versus C

Susana Posada-Céspedes, Gert Van Zyl, Hesam Montazeri, Jack Kuipers, Soo-Yon Rhee, Roger Kouyos, Huldrych F Günthard, Niko Beerenwinkel
2021
Here, we present a methodology for the comparison of mutational networks in different HIV-1 subtypes, based on Hidden Conjunctive Bayesian Networks (H-CBN), a probabilistic model for inferring mutational  ...  The inferred mutational networks for subtype B versus C are significantly different sharing only five constraints on the order of accumulating mutations with mutation at residue 54 as the parental event  ...  In other comparative studies using data simulated under various fitness landscapes, H-CBN models typically provide comparable or better performance to competitors such as CAPRI [33] and trees [33, 34  ... 
doi:10.5167/uzh-210845 fatcat:fibljsinlfdu3htgm3brt2qdhe

Algebra of Systems: A Metalanguage for Model Synthesis and Evaluation

Benjamin H. Y. Koo, Willard L. Simmons, Edward F. Crawley
2009 IEEE transactions on systems, man and cybernetics. Part A. Systems and humans  
Qiu for their inputs on this paper and also D. Rayside and R. Seater for their insightful discussions and technical inputs that made this paper more technically accurate and readable.  ...  To help people see and seek the values in the design landscape, we need a unifying algebraic framework to guide the implementation of a general-purpose computable design language. D.  ...  The right-hand-side panel also contains the graph view, tree view, and matrix view.  ... 
doi:10.1109/tsmca.2009.2014546 fatcat:2sunclrml5gkbedi3hgnrwzgwy

Large negative effect of non-native trout and minnows on Pyrenean lake amphibians

Alexandre Miró, Ibor Sabás, Marc Ventura
2018 Biological Conservation  
Most of the lakes are above the tree line with catchments partially covered by meadows, although some of them are on or below the tree line.  ...  Focussing on non-native trout, northern hemisphere high mountain water bodies are naturally fishless ecosystems due to natural barriers that prevent the colonization of fish species from lower streams  ... 
doi:10.1016/j.biocon.2017.12.030 fatcat:3iyk4ue4bbdafm2h5nbb56x6la

A Characterization of Multiclass Learnability [article]

Nataly Brukhim, Daniel Carmon, Irit Dinur, Shay Moran, Amir Yehudayoff
2022 arXiv   pre-print
This dimension was introduced by Natarajan (1988) as a barrier for PAC learning.  ...  This work provides a negative answer: we construct a non-learnable class with Natarajan dimension one.  ...  There is an infinite learnable class H tree over X = N so that for each x ∈ X and h ∈ H tree , there is g ∈ H tree that agrees with h on all points besides x.  ... 
arXiv:2203.01550v1 fatcat:ehxxx7isprdljcdpgrarrmxsfu

Strategic Alignment of Business Processes [chapter]

Evan D. Morrison, Aditya K. Ghose, Hoa K. Dam, Kerry G. Hinge, Konstantin Hoesch-Klohe
2012 Lecture Notes in Computer Science  
Acknowledgements Work on this project has been supported by the Australian CRC for Smart Services. http://www.smartservicescrc.com.au/.  ...  At this point our data structure is complete, we can create new poset (without operators) using by first declaring a new instance of poset: Poset p = new Poset(); and then filling a list of pairs, e.g.  ...  This is done by focusing on data values and how values correspond.  ... 
doi:10.1007/978-3-642-31875-7_3 fatcat:zl76yniycjftvjafhokyiqjv6e

Selected open problems in Matching Under Preferences

Katarína Cechlárová, Ágnes Cseh, David F. Manlove
2019 Bulletin of the European Association for Theoretical Computer Science  
Acknowledgements The authors would like to thank Péter Biró, Chien-Chung Huang, and Baharak Rastegari for discussions on some of the most recent results, Jiehua Chen for alerting us to several recent references  ...  The 3/2 barrier has been broken for special cases of max smti.  ...  Note that, if we drop the insistence, as in this subsection, that the "divorcees" marry one another as part of the divorce operation, then the landscape changes dramatically -see [90] , [68, Section 2.6  ... 
dblp:journals/eatcs/CechlarovaCM19 fatcat:jka6uh4xovbhnczdki4e6f32oa

A Survey on Blockchain Interoperability: Past, Present, and Future Trends [article]

Rafael Belchior, André Vasconcelos, Sérgio Guerreiro, Miguel Correia
2021 arXiv   pre-print
Each category is further divided into sub-categories based on defined criteria.  ...  Blockchain interoperability is emerging as one of the crucial features of blockchain technology, but the knowledge necessary for achieving it is fragmented.  ...  A sender is an entity that initiates a value transfer. A router applies currency exchange and forwards packets of value. The receiver obtains the value transmitted.  ... 
arXiv:2005.14282v3 fatcat:svd3ltjeenfsjerwa2sgwz6nzy

Lines across the landscape: history, impact and heritage of Australian rural fences

John Pickard
2022
Rabbit-proof fences and government-funded barrier fences in Victoria and NSW are documented in detail. Fences both impact on the environment and indicate environmental change.  ...  Rural fences are ubiquitous but invisible cultural objects in Australian landscapes. thesis I bring them into the foreground starting with their social context and role in Australian culture.  ...  Under this view, barriers would create a binary landscape with vermin on one side but not on the other.  ... 
doi:10.25949/19432097.v1 fatcat:ypex6rnczbfydbfjasebycyvm4
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