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Local coherence

Bernhard König
2003 Annals of Pure and Applied Logic  
But this contradicts local coherence by Lemma 2.7.  ...  If (Ä) holds then there is a locally coherent non-coherent Ä-tree. Proof. Fix a (Ä)-sequence C = C : ∈ Lim(Ä) .  ...  If T is a locally coherent tree of height with S T stationary, then T is trivially coherent. Proof. Assume that C T is stationary. Then RP 2 will provide us with an ∈-chain Let =sup(M ∩ ) and = sup ¡!  ... 
doi:10.1016/s0168-0072(03)00053-8 fatcat:tv2xpegdpned5pmhw4frg3agie

Modeling local coherence

Regina Barzilay, Mirella Lapata
2005 Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics - ACL '05  
This paper considers the problem of automatic assessment of local coherence.  ...  Our experiments demonstrate that the induced model achieves significantly higher accuracy than a state-of-the-art coherence model.  ...  The key premise of our work is that the distribution of entities in locally coherent texts exhibits certain regularities.  ... 
doi:10.3115/1219840.1219858 dblp:conf/acl/BarzilayL05 fatcat:7s4b2fye5vc4piwb5jh4r62lam

On coherent topoi coherent 1-localic ∞-topoi [article]

Peter J. Haine
2019 arXiv   pre-print
1-localic ∞-topoi (in Lurie's sense).  ...  In this note we prove the following useful fact that seems to be missing from the literature: the ∞-category of coherent ordinary topoi (in the sense of SGA4) is equivalent to the ∞-category of coherent  ...  of coherent ordinary topoi is equivalent to the ∞-category of coherent 1-localic ∞-topoi (Proposition 2.10).  ... 
arXiv:1904.01877v2 fatcat:7x7xmgh4ffg3bl4btiewomzpue

On locally coherent hearts

Manuel Saorín
2017 Pacific Journal of Mathematics  
presented objects, then its heart is itself a locally coherent Grothendieck category.  ...  We show that, under particular conditions, if a t-structure in the unbounded derived category of a locally coherent Grothendieck category restricts to the bounded derived category of its category of finitely  ...  Therefore H is locally coherent. Remark 4.6. Condition 1 of last proposition is not necessary for the heart to be a locally coherent Grothendieck category.  ... 
doi:10.2140/pjm.2017.287.199 fatcat:v6aa5hdsjrau3god26hhflp5ge

Coherent homotopy and localization

Sibe Mardešić
1999 Topology and its Applications  
Mardešić, is isomorphic to the category Ho(pro-Top), obtained by localizing the category pro-Top at level homotopy equivalences.  ...  The purpose of this paper is to give a direct and relatively simple proof of the fact that the coherent homotopy category CH(Top), introduced in 1983 by Yu.T. Lisitsa and S.  ...  Then, A = Ho(pro-Top) is the localization of pro-Top and P : pro-Top → Ho(pro-Top) is the localization functor. Also consider the coherence functor F = C : pro-Top → CH(Top).  ... 
doi:10.1016/s0166-8641(98)00034-0 fatcat:qmerdpw7fzaf7av65xx5tlawei

Computing locally coherent discourses

Ernst Althaus, Nikiforos Karamanis, Alexander Koller
2004 Proceedings of the 42nd Annual Meeting on Association for Computational Linguistics - ACL '04  
We present the first algorithm that computes optimal orderings of sentences into a locally coherent discourse.  ...  The algorithm runs very efficiently on a variety of coherence measures from the literature. We also show that the discourse ordering problem is NP-complete and cannot be approximated. © (an ©  ...  local coherence is still largely unsolved.  ... 
doi:10.3115/1218955.1219006 dblp:conf/acl/AlthausKK04 fatcat:vouczrdovvgujcypvkmbkhgajy

BPS coherent states and localization [article]

David Berenstein, Shannon Wang
2022 arXiv   pre-print
All of these can be computed using localization methods.  ...  We introduce coherent states averaged over a gauge group action to study correlators of half BPS states in N=4 SYM theory.  ...  The integral can also be done with localization methods. First, when N 1 = N 2 , we need to be careful over what we mean by localization.  ... 
arXiv:2203.15820v2 fatcat:63w6q6r6dnbv5aelo7yki62qyi

Locally finitely presented and coherent hearts [article]

Carlos E. Parra, Manuel Saorín, Simone Virili
2022 arXiv   pre-print
The third problem that we tackle is that of local coherence.  ...  all locally coherent categories, all categories of modules and several categories of quasi-coherent sheaves over schemes.  ...  either Mod-A is not locally coherent or Mod-A is locally coherent and t does not restrict to mod-A.  ... 
arXiv:1908.00649v3 fatcat:va2iintsvrc4jl2tsnefla4fhe

A Neural Local Coherence Model

Dat Tien Nguyen, Shafiq Joty
2017 Proceedings of the 55th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)  
We propose a local coherence model based on a convolutional neural network that operates over the entity grid representation of a text.  ...  Our evaluation on three different coherence assessment tasks demonstrates that our model achieves state of the art results outperforming existing models by a good margin.  ...  Acknowledgments We thank Regina Barzilay and Mirella Lapata for making their summarization data available and Micha Elsner for making his coherence toolkit publicly available.  ... 
doi:10.18653/v1/p17-1121 dblp:conf/acl/NguyenJ17 fatcat:isa66gdx2vdajf23nl7vvxvqpy

Coherent Control of Quantum Localization [chapter]

Martin Holthaus
1999 Coherent Control in Atoms, Molecules, and Semiconductors  
An example for this coherent control of the localization length is depicted in Fig. 1 .  ...  Since -in precise analogy to the renormalization of Landé factors and to the coherent control of Anderson localization -the effective value of ∆ can be manipulated by means of an external resonant periodic  ... 
doi:10.1007/978-94-011-4552-7_14 fatcat:klej5qdrsrae7pamkx64rbpdhy

Bipartite concurrence and localized coherence

Chang-shui Yu, He-shan Song
2009 Physical Review A. Atomic, Molecular, and Optical Physics  
In particular, it is shown that bipartite concurrence of pure states just captures the maximal difference between local coherence and the average coherence of one subsystem induced by local operations  ...  Based on a proposed coherence measure, we show that the local coherence of a bipartite quantum pure state (coherence of its reduced density matrix) is exactly the same as the minimal average co- herence  ...  In particular, it is shown that with this coherence measure, concurrence can be regarded as the difference between the maximal and the minimal localized (local) coherence.  ... 
doi:10.1103/physreva.80.022324 fatcat:jlt7yqyswfegjcq55ewxjmnhi4

Graph-based Local Coherence Modeling

Camille Guinaudeau, Michael Strube
2013 Annual Meeting of the Association for Computational Linguistics  
We propose a computationally efficient graph-based approach for local coherence modeling.  ...  We evaluate our system on three tasks: sentence ordering, summary coherence rating and readability assessment.  ...  This led to the development of many theories and models accounting for local coherence.  ... 
dblp:conf/acl/GuinaudeauS13 fatcat:pqzbww6tqjgxrdcg5yqmvwprgy

Local quantum coherence and superfluidity [article]

F. de Pasquale, S.M. Giampaolo
2001 arXiv   pre-print
of the degenerate local ground states.  ...  A superfluid phase is expected when the ground state of the local energy is doubly degenerate.  ...  The superfluid phase is defined in terms of a generating function associated to the local coherence operator.  ... 
arXiv:cond-mat/0103293v1 fatcat:6kkbif5y3bh7bk6nefdxn2clua

Localized coherence of freak waves

Arnida L. Latifah, E. van Groesen
2016 Nonlinear Processes in Geophysics  
The local coherence of the critical group event is measured by its time spreading of the most energetic waves.  ...  This indicates that a local coherence mechanism within a wave group can be one mechanism that leads to the appearance of a freak wave.</p>  ...  van Groesen: Localized coherence of freak waves occurs.  ... 
doi:10.5194/npg-23-341-2016 fatcat:jc5niyuvujcu3lvk5ob2ttxk5u

A localizing directory coherence protocol

Collin McCurdy, Charles Fischer
2004 Proceedings of the 3rd workshop on Memory performance issues in conjunction with the 31st international symposium on computer architecture - WMPI '04  
the requirements for a localizing coherence protocol.  ...  It proposes a new multiprocessor architecture -which has both a global address-space and multiple processor-local addressspaces -with new memory instructions and a new coherence protocol to manage the  ...  Thus, when an address is localized, the protocol ensures that address is removed from the coherence domain completely (invalidated at all sharers) before it is used by the localizing processor.  ... 
doi:10.1145/1054943.1054947 dblp:conf/wmpi/McCurdyF04 fatcat:zruxjundvffrtjc3fhufocb7ma
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