53 research outputs found
Bethe Ansatz for the Spin-1 XXX Chain with Two Impurities
By using algebraic Bethe ansatz method, we give the Hamitonian of the spin-1
XXX chain associated with with two boundary impurities.Comment: 8 pages, latex, no figures, to be appeared in Commun. Theor. Phy
SALI: A Scalable Adaptive Learned Index Framework based on Probability Models
The growth in data storage capacity and the increasing demands for high
performance have created several challenges for concurrent indexing structures.
One promising solution is learned indexes, which use a learning-based approach
to fit the distribution of stored data and predictively locate target keys,
significantly improving lookup performance. Despite their advantages,
prevailing learned indexes exhibit constraints and encounter issues of
scalability on multi-core data storage.
This paper introduces SALI, the Scalable Adaptive Learned Index framework,
which incorporates two strategies aimed at achieving high scalability,
improving efficiency, and enhancing the robustness of the learned index.
Firstly, a set of node-evolving strategies is defined to enable the learned
index to adapt to various workload skews and enhance its concurrency
performance in such scenarios. Secondly, a lightweight strategy is proposed to
maintain statistical information within the learned index, with the goal of
further improving the scalability of the index. Furthermore, to validate their
effectiveness, SALI applied the two strategies mentioned above to the learned
index structure that utilizes fine-grained write locks, known as LIPP. The
experimental results have demonstrated that SALI significantly enhances the
insertion throughput with 64 threads by an average of 2.04x compared to the
second-best learned index. Furthermore, SALI accomplishes a lookup throughput
similar to that of LIPP+.Comment: Accepted by Conference SIGMOD 24, June 09-15, 2024, Santiago, Chil
The Dynamical Yang-Baxter Relation and the Minimal Representation of the Elliptic Quantum Group
In this paper, we give the general forms of the minimal matrix (the
elements of the -matrix are numbers) associated with the Boltzmann
weights of the interaction-round-a-face (IRF) model and the minimal
representation of the series elliptic quantum group given by Felder
and Varchenko. The explicit dependence of elements of -matrices on spectral
parameter are given. They are of five different forms (A(1-4) and B). The
algebra for the coefficients (which do not depend on ) are given. The
algebra of form A is proved to be trivial, while that of form B obey
Yang-Baxter equation (YBE). We also give the PBW base and the centers for the
algebra of form B.Comment: 23 page
Integrability of the Heisenberg Chains with Boundary Impurities and Their Bethe Ansatz
In this paper, we show the integrability of spin-1/2 XXZ Heisenberg chain
with two arbitrary spin boundary Impurities. By using the fusion method, we
generalize it to the spin-1 XXZ chain. Then the eigenvalues of Hamiltonians of
these models are obtained by the means of Bethe ansatz method.Comment: 13 pages, latex, no figures, to be appeared in J.Phys.
Lemur: Harmonizing Natural Language and Code for Language Agents
We introduce Lemur and Lemur-Chat, openly accessible language models
optimized for both natural language and coding capabilities to serve as the
backbone of versatile language agents. The evolution from language chat models
to functional language agents demands that models not only master human
interaction, reasoning, and planning but also ensure grounding in the relevant
environments. This calls for a harmonious blend of language and coding
capabilities in the models. Lemur and Lemur-Chat are proposed to address this
necessity, demonstrating balanced proficiencies in both domains, unlike
existing open-source models that tend to specialize in either. Through
meticulous pre-training using a code-intensive corpus and instruction
fine-tuning on text and code data, our models achieve state-of-the-art averaged
performance across diverse text and coding benchmarks among open-source models.
Comprehensive experiments demonstrate Lemur's superiority over existing
open-source models and its proficiency across various agent tasks involving
human communication, tool usage, and interaction under fully- and partially-
observable environments. The harmonization between natural and programming
languages enables Lemur-Chat to significantly narrow the gap with proprietary
models on agent abilities, providing key insights into developing advanced
open-source agents adept at reasoning, planning, and operating seamlessly
across environments. https://github.com/OpenLemur/Lemu
Genome-wide association analysis identifies 30 new susceptibility loci for schizophrenia
We conducted a genome-wide association study (GWAS) with replication in 36,180 Chinese individuals and performed further transancestry meta-analyses with data from the Psychiatry Genomics Consortium (PGC2). Approximately 95% of the genome-wide significant (GWS) index alleles (or their proxies) from the PGC2 study were overrepresented in Chinese schizophrenia cases, including ∼50% that achieved nominal significance and ∼75% that continued to be GWS in the transancestry analysis. The Chinese-only analysis identified seven GWS loci; three of these also were GWS in the transancestry analyses, which identified 109 GWS loci, thus yielding a total of 113 GWS loci (30 novel) in at least one of these analyses. We observed improvements in the fine-mapping resolution at many susceptibility loci. Our results provide several lines of evidence supporting candidate genes at many loci and highlight some pathways for further research. Together, our findings provide novel insight into the genetic architecture and biological etiology of schizophrenia
Comentário a “Examining Tang and Song Yingtang image halls from a clan sacrificial perspective”
Reference to the commented article: CHENG, Wanli. Examining Tang and Song Yingtang image halls from a clan sacrificial perspective. Trans/Form/Ação: Unesp Journal of Philosophy, v. 46, n. 3, p. 229 - 248, 2023.Comments on “Examining Tang and Song Yingtang image halls from a clan sacrificial perspective”Comments on “Examining Tang and Song Yingtang image halls from a clan sacrificial perspective”Comments on “Examining Tang and Song Yingtang image halls from a clan sacrificial perspective”Referência ao artigo comentado: CHENG, Wanli. Examining Tang and Song Yingtang image halls from a clan sacrificial perspective. Trans/Form/Ação: Unesp Journal of Philosophy, v. 46, n. 3, p. 229 - 248, 2023
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