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we study tree approximations to classical two - body partition functions on sparse and loopy graphs via the brydges - kennedy - abdessalam - rivasseau forest expansion. we show that for sparse graphs ( with large cycles ), the partition function above a certain temperature $ t ^ * $ can be approximated by a graph polyn... | arxiv:2009.00113 |
we study evolution of a flat friedmann - robertson walker universe filled with a bulk viscous cosmological fluid in a higher derivative theory of gravity in the presence of time varying gravitational and cosmological constant. cosmological models admitting both power - law and exponential expansions are explored here i... | arxiv:1105.3307 |
the delaunay tessellation of a locally finite subset of hyperbolic space is constructed using convex hulls in euclidean space of one higher dimension. for finite and lattice - invariant sets it is proven to be a polyhedral decomposition, and versions ( necessarily modified from the euclidean setting ) of the empty circ... | arxiv:1308.4899 |
this paper addresses a mathematically tractable model of the prisoner ' s dilemma using the framework of active inference. in this work, we design pairs of bayesian agents that are tracking the joint game state of their and their opponent ' s choices in an iterated prisoner ' s dilemma game. the specification of the ag... | arxiv:2306.15494 |
in this article we review four - dimensional string vacua with n = 2 space - time supersymmetry. in particular, we will discuss several aspects of the string - string duality between the heterotic string, compactified on $ k3 \ times t ^ 2 $, and the type ii superstring compactified on a calabi - yau three - fold. we i... | arxiv:hep-th/9803072 |
we verify functional a posteriori error estimate for obstacle problem proposed by repin. simplification into 1d allows for the construction of a nonlinear benchmark for which an exact solution of the obstacle problem can be derived. quality of a numerical approximation obtained by the finite element method is compared ... | arxiv:1301.5923 |
there has been substantial interest in obtaining a quantum - gravitational description of de sitter space. however, any such attempts have encountered formidable obstacles, and new philosophical directions may be in order. one possibility, although somewhat speculative, would be to view the physical universe as a timel... | arxiv:hep-th/0205251 |
in this paper we develop a theory of linear differential systems analogous to the classical one for odes, including the obtaining of fundamental matrices, the development of a variation of parameters formula and the expression of the green ' s functions. we also derive interesting results in the case of differential eq... | arxiv:1707.00839 |
in the standard model ( sm ), the $ \ rho $ parameter is equal to 1 and the ratio $ \ lambda _ { wz } $ of higgs $ \ to zz $ and higgs $ \ to ww $ is also equal to 1 at the tree level. when going beyond the sm with more than one types of higgs representations these quantities may be different from the sm predictions wh... | arxiv:1803.05254 |
we show that the aharonov - bohm effect finds a natural description in the setting of qft on curved spacetimes in terms of superselection sectors of local observables. the extension of the analysis of superselection sectors from minkowski spacetime to an arbitrary globally hyperbolic spacetime unveils the presence of a... | arxiv:1912.05297 |
generalized mode - coupling theory ( gmct ) constitutes a systematically correctable, first - principles theory to study the dynamics of supercooled liquids and the glass transition. it is a hierarchical framework that, through the incorporation of increasingly many particle density correlations, can remedy some of the... | arxiv:2008.10550 |
we present 168 arcmin ^ 2 spectral images of the sgr b2 complex taken with herschel / spire - fts. we detect ubiquitous emission from co ( up to j = 12 - 11 ), h2o, [ ci ] 492, 809 ghz, and [ nii ] 205 um lines. we also present maps of the sio, n2h +, hcn, and hco + emission obtained with the iram30m telescope. the clo... | arxiv:2103.17177 |
we establish lower bounds for all weighted even moments of primes up to $ x $ in intervals which are in agreement with a conjecture of montgomery and soundararajan. our bounds hold unconditionally for an unbounded set of values of $ x $, and hold for all $ x $ under the riemann hypothesis. we also deduce new unconditio... | arxiv:2009.05760 |
in three dimensions, dipole - dipole interactions which alter atomic level shifts and spontaneous decay rates only persist over distances comparable to the wavelength of the emitted light. in this paper we show that it is possible to significantly extend the range of these interactions with the help of a partially tran... | arxiv:2305.18826 |
this paper presents the analysis of a deep near - infrared j, h, ks - imaging survey ( 37. 5 sq deg ) aimed at tracing the galaxy distribution of the great attractor ( ga ) in the zone of avoidance along the so - called norma wall. the resulting galaxy catalog is complete to extinction - corrected magnitudes ks ^ o = 1... | arxiv:1107.1069 |
discussion of ` ` equi - energy sampler ' ' by kou, zhou and wong [ math. st / 0507080 ] | arxiv:math/0611219 |
the recurrent activity of radio agn, with phases of activity alternating with periods of quiescence, has been known since the early studies of these objects. the full relevance of this cycle is emphasised by the requirement, from the agn feedback scenario, of a recurrent impact of the energy released by the smbh during... | arxiv:2403.13329 |
spiking neural network ( snn ) has attracted much attention due to their powerful spatio - temporal information representation ability. capsule neural network ( capsnet ) does well in assembling and coupling features at different levels. here, we propose spiking capsnet by introducing the capsules into the modelling of... | arxiv:2111.07785 |
in this paper, we propose and analyze a new matrix - free primal - dual algorithm, called restarted halpern primal - dual hybrid gradient ( rhpdhg ), for solving linear programming ( lp ). we show that rhpdhg can achieve optimal accelerated linear convergence on feasible and bounded lp. furthermore, we present a refine... | arxiv:2407.16144 |
the pattern of a large approximate degeneracy of the excited hadron spectra ( larger than the chiral restoration degeneracy ) is present in the recent experimental report of bugg. here we try to model this degeneracy with state of the art quark models. we review how the coulomb gauge chiral invariant and confining beth... | arxiv:hep-ph/0703114 |
the pure spinor formulation of superstring theory includes an interacting sector of central charge $ c _ { \ lambda } = 22 $, which can be realized as a curved $ \ beta \ gamma $ system on the cone over the orthogonal grassmannian $ \ text { og } ^ { + } ( 5, 10 ) $. we find that the spectrum of the $ \ beta \ gamma $ ... | arxiv:1902.09504 |
then be compared to the us community colleges. since the implementation of bologna process in portugal in 2007, the polytechnics offer the 1st cycle ( licentiate degree ) and 2nd cycle ( master ' s degree ) of higher studies. until 1998, the polytechnics only awarded bachelor ( portuguese : bacharelato ) degrees ( thre... | https://en.wikipedia.org/wiki/Institute_of_technology |
in this paper, we use the inverse curvature flow to prove a sharp geometric inequality on star - shaped and two - convex hypersurface in hyperbolic space. | arxiv:1211.4109 |
we consider a chain of anharmonic oscillators with local mean field interaction and long - range stochastic exchanges of velocity. even if the particles are not exchangeable, we prove the convergence of the empirical measure associated with this chain to a solution of a vlasov - type equation. we then use this converge... | arxiv:2010.02531 |
we solve the general problem of determining, through imaging, the three - dimensional positions of $ n $ weak incoherent point - like emitters in an arbitrary spatial configuration. we show that a structured measurement strategy in which a linear interferometer feeds into an array of photo - detectors is always optimal... | arxiv:1909.09581 |
hpc systems used for research run a wide variety of software and workflows. this software is often written or modified by users to meet the needs of their research projects, and rarely is built with security in mind. in this paper we explore several of the key techniques that mit lincoln laboratory supercomputing cente... | arxiv:2409.10770 |
witnessing entanglement is crucial in quantum information processing. with properly preparing ancillary states, it has been shown previously that genuine entanglement can be witnessed without trusting measurement devices. in this work, we generalize the scenario and show that generic multipartite entanglement structure... | arxiv:1607.08002 |
the high production rate and $ \ langle x _ { f } \ rangle > 0. 33 $ of the doubly charmed baryons measured by the selex experiment is not amenable to perturbative qcd analysis. in this paper we calculate the production of the doubly heavy baryons with the double intrinsic charm fock states whose existence is rigorousl... | arxiv:1605.03070 |
we present a simple paradigm for detection of an immobile target by a space - time coupled random walker with a finite lifetime. the motion of the walker is characterized by linear displacements at a fixed speed and exponentially distributed duration, interrupted by random changes in the direction of motion and resumpt... | arxiv:1503.02013 |
we study computational methods for the approximation of special functions recurrent in geometric function theory and quasiconformal mapping theory. the functions studied can be expressed as quotients of complete elliptic integrals and as inverses of such quotients. in particular, we consider the distortion function $ \... | arxiv:2212.09336 |
training advanced ai models requires large investments in computational resources, or compute. yet, as hardware innovation reduces the price of compute and algorithmic advances make its use more efficient, the cost of training an ai model to a given performance falls over time - a concept we describe as increasing comp... | arxiv:2311.15377 |
we have surveyed 84 class 0, class i, and flat - spectrum protostars in mid - infrared [ si ii ], [ fe ii ] and [ s i ] line emission, and 11 of these in far - infrared [ o i ] emission. we use the results to derive their mass outflow rates. thereby we observe a strong correlation of mass outflow rates with bolometric ... | arxiv:1511.04787 |
we study two models describing the interaction of a two - level system with two quantum field modes. the first one is equivalent to a dissipative two - state system with just two boson fields in the absence of tunneling. the second describes two orthogonal fields interacting with the corresponding orthogonal dipoles of... | arxiv:1504.02748 |
we show that excitability is generic in systems displaying dissipative solitons when spatial inhomogeneities and drift are present. thus, dissipative solitons in systems which do not have oscillatory states, such as the prototypical swift - hohenberg equation, display oscillations and type i and ii excitability when ad... | arxiv:1302.3536 |
multi - view unsupervised feature selection ( mufs ) has been demonstrated as an effective technique to reduce the dimensionality of multi - view unlabeled data. the existing methods assume that all of views are complete. however, multi - view data are usually incomplete, i. e., a part of instances are presented on som... | arxiv:2208.09736 |
this paper extends the work of a previous paper [ arxiv : 1208. 2611 ] on the flow of time, to consider the origin of the arrow of time. it proposes that a ` past condition ' cascades down from cosmological to micro scales, being realized in many microstructures and setting the arrow of time at the quantum level by top... | arxiv:1302.7291 |
the possibility of distinguishing dirac and majorana fermions by cosmic torsion in the spatial - flat frw spacetime is discussed. the scattering amplitudes of two types of fermions deviate from each other by the vector part of torsion in non - minimal coupling case. the scattering of massive fermions by cosmic torsion ... | arxiv:2304.00475 |
we apply a functional - integral formalism for markovian birth and death processes to determine asymptotic corrections to mean - field theory in the malthus - verhulst process ( mvp ). expanding about the stationary mean - field solution, we identify an expansion parameter that is small in the limit of large mean popul... | arxiv:cond-mat/0507576 |
cost savings attributed to developing and testing for quality code as soon as possible in the process, particularly before release. = = = professions = = = a person with a profession in computer engineering is called a computer engineer. = = applications and practice = = there are two major focuses in computer engineer... | https://en.wikipedia.org/wiki/Computer_engineering |
recent years have seen embodied visual navigation advance in two distinct directions : ( i ) in equipping the ai agent to follow natural language instructions, and ( ii ) in making the navigable world multimodal, e. g., audio - visual navigation. however, the real world is not only multimodal, but also often complex, a... | arxiv:2210.07940 |
food engineering is a scientific, academic, and professional field that interprets and applies principles of engineering, science, and mathematics to food manufacturing and operations, including the processing, production, handling, storage, conservation, control, packaging and distribution of food products. given its ... | https://en.wikipedia.org/wiki/Food_engineering |
unscheduled maintenance has contributed to longer downtime for vehicles and increased costs for logistic readiness squadrons ( lrss ) in the air force. when vehicles are in need of repair outside of their scheduled time, depending on their priority level, the entire squadron ' s slated repair schedule is transformed ne... | arxiv:2112.13922 |
we introduce a scheme for remote entanglement generation for the photon polarization. the technique is based on transferring the initial frequency correlations to specific polarization - frequency correlations by local dephasing and their subsequent removal by frequency up - conversion. on fundamental level, our theore... | arxiv:1705.01713 |
recent research shows that hawking radiation can be treated as a quantum tunnelling process, and hawking temperature of dirac particles across the horizon of a black hole can be correctly recovered via fermions tunnelling method. in this paper, motivated by fermions tunnelling method, we attempt to apply the analysis t... | arxiv:0807.1358 |
the homogeneous and isotropic cosmological model in the weyl conformal geometry is considered. we showed that, despite the conformal invariance, the dust matter is allowed in such a universe. it is shown that the number of dust particles is not conserved, i. e., they are continuously produced. the general form of the l... | arxiv:2203.04257 |
we provide explicit expression of squeezing function for infinitely connected planar domain obtained by removing a convergent sequence of points from the unit disk converging to the boundary of unit disk. we also discuss fridman invariant associated with this domain as well as some examples of squezzing functions corre... | arxiv:2210.08593 |
the conformity effect, indicating the evolution of a galaxy is related to its surrounding neighbour galaxies as far as a few mpc, is an interesting phenomenon in the modeling of galaxy and evolution. here we study the conformity effect of hi galaxies in a matched galaxy sample between sdss dr7 and alfalfa surveys. by c... | arxiv:2008.05682 |
typescript is a quickly evolving superset of javascript with active development of new features. our paper seeks to understand how quickly these features are adopted by the developer community. existing work in javascript shows the adoption of dynamic language features can be a major hindrance to static analysis. as ty... | arxiv:2303.09802 |
the submillimeter array ( sma ), a collaboration between the smithsonian astrophysical observatory and the academica sinica institute for astronomy and astrophysics of taiwan, is an eight - element radio - interferometer designed to operate throughout the major atmospheric windows from about 180 to 900 ghz. in an effor... | arxiv:astro-ph/0509467 |
we investigate the possibility of band structure engineering in the recently predicted 2d layered form of blue phosphorus via an electric field ( e $ _ z $ ) applied perpendicular to the layer ( s ). using density functional theory, we study the effect of a transverse electric field in monolayer, as well as three diffe... | arxiv:1412.0858 |
for a stable process, we give an explicit formula for the potential measure of the process killed outside a bounded interval and the joint law of the overshoot, undershoot and undershoot from the maximum at exit from a bounded interval. we obtain the equivalent quantities for a stable process reflected in its infimum. ... | arxiv:1312.1222 |
in this paper we construct a pseudorandom multisequence $ ( x _ { n _ 1,..., n _ r } ) $ based on $ k $ th - order linear recurrences modulo $ p $, such that the discrepancy of the $ s $ - dimensional multisequence $ ( x _ { n _ 1 + i _ 1,..., n _ r + i _ r } ) _ { 1 \ leq i _ j \ leq s _ j, 1 \ leq j \ leq r } $ $ 1 \... | arxiv:1106.5860 |
in december 2015, a bounty emerged to establish both reliable communication and secure transfer of value between the dogecoin and ethereum blockchains. this prized " dogethereum bridge " would allow parties to " lock " a doge coin on dogecoin and in exchange receive a newly minted wow token in ethereum. any subsequent ... | arxiv:1908.03999 |
we begin with giving some motivation for the study of charm semileptonic and fully leptonic decays. we turn next to a discussion of semileptonic absolution branching fraction results form cleo - c. two exciting high statistics results on fully leptonic decays of the d + - > mu + nu and ds + - > mu + nu from cleo - c an... | arxiv:hep-ex/0605030 |
existing protocols for multilateral negotiation require a full consensus among the negotiating parties. in contrast, we propose a protocol for multilateral negotiation that allows partial consensus, wherein only a subset of the negotiating parties can reach an agreement. we motivate problems that require such a protoco... | arxiv:2205.06678 |
this paper analyzes the performance of multicell massive multiple - input and multiple - output ( mimo ) systems with variable - resolution analog - to - digital converters ( adcs ). in such an architecture, each adc uses arbitrary quantization resolution to save power and hardware cost. along this direction, we first ... | arxiv:2109.09335 |
biomedical engineering = = = ebme technicians and engineers in the uk work in the nhs and private sector. they are part of the clinical engineering familiar in the uk. their role is to manage and maintain medical equipment assets in nhs and private healthcare organizations. they are professionally registered with the e... | https://en.wikipedia.org/wiki/Clinical_engineering |
the neutrino oscillations in vacuum are derived in a manifestly coherent scheme. the mechanism is operative in a quantum field theoretical framework, justifying nevertheless a formal analogy with quantum mechanical two - ( or more ) level systems and their oscillatory behaviour. both the flavour states and the massive ... | arxiv:2304.13491 |
recent large language models ( llms ) have revealed strong abilities to understand natural language. since most of them share the same basic structure, i. e. the transformer block, possible contributors to their success in the training process are scaling and instruction tuning. however, how these factors affect the mo... | arxiv:2310.19084 |
we discuss elementary entwiners that cross - weave the variables of certain integrable models : liouville, sine - gordon, and sinh - gordon field theories in two - dimensional spacetime, and their quantum mechanical reductions. first we define a complex time parameter that varies from one energy - shell to another. the... | arxiv:quant-ph/0011101 |
we consider systems $ ( m, \ omega, g ) $ with $ m $ a closed smooth manifold, $ \ omega $ a real valued closed one form and $ g $ a riemannian metric, so that $ ( \ omega, g ) $ is a morse - smale pair, definition ~ 2. we introduce a numerical invariant $ \ rho ( \ omega, g ) \ in [ 0, \ infty ] $ and improve morse - ... | arxiv:math/0101043 |
consider the following interacting particle system on the $ d $ - ary tree, known as the frog model : initially, one particle is awake at the root and i. i. d. poisson many particles are sleeping at every other vertex. particles that are awake perform simple random walks, awakening any sleeping particles they encounter... | arxiv:1501.05874 |
the conformable time fractional jimbo - miwa and zakharov - kuznetsov equations are solved by the generalized form of the kudryashov method. a simple compatible wave transformation is employed to reduce the dimension of the equations to one. the predicted solution is of the form of a rational expression of two finite s... | arxiv:1706.00349 |
suppose m is a noncompact connected pl 2 - manifold. in this paper we study the topological property of the triple ( h ( m ) _ 0, h ^ pl ( m ) _ 0, h ^ pl, c ( m ) _ 0 ), where h ( m ) _ 0 is the identity component of the homeomorphism group { \ cal h } ( m ) of m with the compact - open topology, and h ^ pl ( m ) _ 0 ... | arxiv:math/0010224 |
we propose a spreading model in multilayer networks and study the nature of nonequilibrium phase transition in the model. the model integrates the susceptible - infected - susceptible ( or susceptible - infected - recovered ) spreading dynamics with a biased diffusion process among different layers. a parameter $ \ alp... | arxiv:1907.13364 |
we describe the orbit structure for the action of the centralizer group of a linear operator on a finite - dimensional complex vector space. the main application is to the classification of solutions to a system of first - order odes with constant coefficients. we completely describe the lattice structure on the set of... | arxiv:1110.4899 |
synthetic spectra generated with the parameterized supernova synthetic - spectrum code synow are compared to observed photospheric - phase spectra of the type ic supernova 1994i. the observed optical spectra can be well matched by synthetic spectra that are based on the assumption of spherical symmetry. we consider the... | arxiv:astro-ph/9906496 |
aperiodic point sets ( or tilings ) which can be obtained by the method of cut and projection from higher dimensional periodic sets play an important role for the description of quasicrystals. their topological invariants can be computed using the higher dimensional periodic structure. we report on the results obtained... | arxiv:math-ph/0010050 |
imaging through dense fog presents unique challenges, with essential visual information crucial for applications like object detection and recognition obscured, thereby hindering conventional image processing methods. despite improvements through neural network - based approaches, these techniques falter under extremel... | arxiv:2404.17503 |
we have searched 4. 5 square degrees of archival hst / acs images for cosmic strings, identifying close pairs of similar, faint galaxies and selecting groups whose alignment is consistent with gravitational lensing by a long, straight string. we find no evidence for cosmic strings in five large - area hst treasury surv... | arxiv:0908.0602 |
a string $ w $ is called a minimal absent word ( maw ) for another string $ t $ if $ w $ does not occur in $ t $ but the proper substrings of $ w $ occur in $ t $. for example, let $ \ sigma = \ { \ mathtt { a, b, c } \ } $ be the alphabet. then, the set of maws for string $ w = \ mathtt { abaab } $ is $ \ { \ mathtt {... | arxiv:2105.08496 |
we provide a lowerbound on the sample complexity of distribution - free parity learning in the realizable case in the shuffle model of differential privacy. namely, we show that the sample complexity of learning $ d $ - bit parity functions is $ \ omega ( 2 ^ { d / 2 } ) $. our result extends a recent similar lowerboun... | arxiv:2103.15690 |
measuring the similarities between objects in information networks has fundamental importance in recommendation systems, clustering and web search. the existing metrics depend on the meta path or meta structure specified by users. in this paper, we propose a stratified meta structure based similarity $ smss $ in hetero... | arxiv:1801.00783 |
a deep neural network has been successfully applied to an electroencephalogram ( eeg ) - based brain - computer interface. however, in most studies, the correlation between eeg channels and inter - region relationships are not well utilized, resulting in sub - optimized spatial feature extraction. in this study, we pro... | arxiv:2112.07148 |
we propose a general framework to study language emergence through signaling games with neural agents. using a continuous latent space, we are able to ( i ) train using backpropagation, ( ii ) show that discrete messages nonetheless naturally emerge. we explore whether categorical perception effects follow and show tha... | arxiv:2005.00110 |
in this paper, we present a comprehensive uav system design to perform the highly complex task of off - centered aerial grasping. this task has several interdisciplinary research challenges which need to be addressed at once. the main design challenges are gps - denied functionality, solely onboard computing, and avoid... | arxiv:2410.05738 |
we introduce a novel measure to quantify the non - gaussian character of a quantum state : the quantum relative entropy between the state under examination and a reference gaussian state. we analyze in details the properties of our measure and illustrate its relationships with relevant quantities in quantum information... | arxiv:0805.1645 |
in this work we deal with the funding costs rising from hedging the risky securities underlying a target volatility strategy ( tvs ), a portfolio of risky assets and a risk - free one dynamically rebalanced in order to keep the realized volatility of the portfolio on a certain level. the uncertainty in the tvs risky po... | arxiv:2112.01841 |
this is an " essay - review " of a book with the same title, by jeffrey bub ( cambridge university press, 1997 ). | arxiv:quant-ph/9711003 |
cloud computing is a cost - effective way for start - up life sciences laboratories to store and manage their data. however, in many instances the data stored over the cloud could be redundant which makes cloud - based data management inefficient and costly because one has to pay for every byte of data stored over the ... | arxiv:1703.10105 |
the generalized degrees of freedom ( gdof ) of the symmetric two - user gaussian interference relay channel ( irc ) is studied. while it is known that the relay does not increase the dof of the ic, this is not known for the more general gdof. for the characterization of the gdof, new sum - capacity upper bounds and low... | arxiv:1207.0335 |
the origin of the narrow optical emission bands seen toward the red rectangle is not yet understood. in this paper we investigate further the proposal that these are due to luminescence of large carbonaceous molecules. polarised signals of several percent could be expected from certain asymmetric molecular rotators. th... | arxiv:1105.4795 |
theoretical models of populations and swarms typically start with the assumption that the motion of agents is governed by the local stimuli. however, an intelligent agent, with some understanding of the laws that govern its habitat, can anticipate the future, and make predictions to gather resources more efficiently. h... | arxiv:1611.09687 |
the cosmological solutions of horava - witten theory discovered by lukas, ovrut and waldram are generalized to allow non vanishing spatial curvature. the solution with closed spatial sections has initial and final curvature singularities. we find two solutions with open spatial sections, both of which evolve from an in... | arxiv:hep-th/9809195 |
nanodiamond reinforced silver matrix nanocomposites with different nanodiamond content are produced from pure silver and nanodiamond powders by a combination of two severe plastic deformation methods, ball - milling and high - pressure torsion ( hpt ). the ball milling parameters are varied to improve the distribution ... | arxiv:2003.10759 |
quantum error - correcting codes ( qeccs ) and decoherence - free subspace ( dfs ) codes provide active and passive means, respectively, to address certain types of errors that arise during quantum computation. the latter technique is suitable to correct correlated errors with certain symmetries and the former to corre... | arxiv:2312.08322 |
over the past years a lot of progress has been made in the understanding of single spin asymmetries in hard scattering processes. we briefly review this subject, covering the non - vanishing of time - reversal odd parton distributions, universality of fragmentation functions, and the discovery of previously unknown tim... | arxiv:hep-ph/0411118 |
we have selected a sample of 80 candidates for obscured radio - loud active galactic nuclei and presented their basic optical / near - infrared ( nir ) properties in paper 1. in this paper, we present both high - resolution radio continuum images for all of these sources and hi 21cm absorption spectroscopy for a few se... | arxiv:1512.07707 |
given a finite, simple, connected graph $ g = ( v, e ) $ with $ | v | = n $, we consider the associated graph laplacian matrix $ l = d - a $ with eigenvalues $ 0 = \ lambda _ 1 < \ lambda _ 2 \ leq \ dots \ leq \ lambda _ n $. one can also consider the same graph equipped with positive edge weights $ w : e \ rightarrow... | arxiv:2402.11758 |
this paper presents a comparison of two reduced - order, sequential and variational data assimilation methods : the seek filter and the r - 4d - var. a hybridization of the two, combining the variational framework and the sequential evolution of covariance matrices, is also preliminarily investigated and assessed in th... | arxiv:0709.2808 |
analyzing large datasets requires responsive query execution, but executing sql queries on massive datasets can be slow. this paper explores whether query execution can begin even before the user has finished typing, allowing results to appear almost instantly. we propose speql, a system that leverages large language m... | arxiv:2503.00714 |
the fairness and trustworthiness of large language models ( llms ) are receiving increasing attention. implicit hate speech, which employs indirect language to convey hateful intentions, occupies a significant portion of practice. however, the extent to which llms effectively address this issue remains insufficiently e... | arxiv:2402.11406 |
independent sociological polls are forbidden in belarus. online polls performed without sound scientific rigour do not yield representative results. yet, both inside and outside belarus it is of great importance to obtain precise estimates of the ratings of all candidates. these ratings could function as reliable proxi... | arxiv:2009.06615 |
we demonstrate that a weak disorder in atomic positions introduces spatially localized optical modes in a dense three - dimensional ensemble of immobile two - level atoms arranged in a diamond lattice and coupled by the electromagnetic field. the frequencies of the localized modes concentrate near band edges of the unp... | arxiv:2007.10648 |
in this paper we introduce a novel neural networks - based approach for approximating solutions to the ( 2d ) incompressible navier - - stokes equations, which is an extension of so called deep random vortex methods ( drvm ), that does not require the knowledge of the biot - - savart kernel associated to the computatio... | arxiv:2405.13691 |
in this work, we present a software package in python for high - throughput first - principles calculations of thermodynamic properties at finite temperatures, which we refer to as dfttk ( density functional theory tool kit ). dfttk is based on the atomate package and integrates our experiences in the last decades on t... | arxiv:2107.03966 |
there is a relation between the generalized property r conjecture and the schoenflies conjecture that suggests a new line of attack on the latter. the approach gives a quick proof of the genus 2 schoenflies conjecture and suffices to prove the genus 3 case, even in the absence of new progress on the generalized propert... | arxiv:math/0603511 |
in a low - statistics pet imaging context, the positive bias in regions of low activity is a burning issue. to overcome this problem, algorithms without the built - in non - negativity constraint may be used. they allow negative voxels in the image to reduce, or even to cancel the bias. however, such algorithms increas... | arxiv:2012.06432 |
in a combined analysis of the experimental data on the coupled processes $ \ pi \ pi \ to \ pi \ pi, k \ bar { k } $ in the channel with $ i ^ gj ^ { pc } = 0 ^ + 0 ^ { + + } $, the various scenarios of these reactions ( with different numbers of resonances ) are considered. in a model - independent approach, based onl... | arxiv:hep-ph/0204007 |
effective charged neutrons involved in one - and two - nucleon tunneling processes in heavy ion collisions between superfluid nuclei are expected to emit photons. although the centroid, width and integrated energy area characterizing the associated gamma - strength functions are rather similar, the corresponding line s... | arxiv:2202.13193 |
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