1,221 research outputs found
Optimal and Bounded-Suboptimal Multi-Goal Task Assignment and Path Finding
We formalize and study the multi-goal task assignment and path finding
(MG-TAPF) problem from theoretical and algorithmic perspectives. The MG-TAPF
problem is to compute an assignment of tasks to agents, where each task
consists of a sequence of goal locations, and collision-free paths for the
agents that visit all goal locations of their assigned tasks in sequence.
Theoretically, we prove that the MG-TAPF problem is NP-hard to solve optimally.
We present algorithms that build upon algorithmic techniques for the
multi-agent path finding problem and solve the MG-TAPF problem optimally and
bounded-suboptimally. We experimentally compare these algorithms on a variety
of different benchmark domains.Comment: ICRA 202
Improving Pre-trained Language Model Fine-tuning with Noise Stability Regularization
The advent of large-scale pre-trained language models has contributed greatly
to the recent progress in natural language processing. Many state-of-the-art
language models are first trained on a large text corpus and then fine-tuned on
downstream tasks. Despite its recent success and wide adoption, fine-tuning a
pre-trained language model often suffers from overfitting, which leads to poor
generalizability due to the extremely high complexity of the model and the
limited training samples from downstream tasks. To address this problem, we
propose a novel and effective fine-tuning framework, named Layerwise Noise
Stability Regularization (LNSR). Specifically, we propose to inject the
standard Gaussian noise or In-manifold noise and regularize hidden
representations of the fine-tuned model. We first provide theoretical analyses
to support the efficacy of our method. We then demonstrate the advantages of
the proposed method over other state-of-the-art algorithms including L2-SP,
Mixout and SMART. While these previous works only verify the effectiveness of
their methods on relatively simple text classification tasks, we also verify
the effectiveness of our method on question answering tasks, where the target
problem is much more difficult and more training examples are available.
Furthermore, extensive experimental results indicate that the proposed
algorithm can not only enhance the in-domain performance of the language models
but also improve the domain generalization performance on out-of-domain data.Comment: Accepted by TNNL
Based on MIPv6 with Support to Improve the Mobile Commerce Transaction
Mobile Commerce is anticipated to be the next business revolution. Under the trend of mobile age, a person begins to realize the benefits of transaction by mobility operations. We can access information, shop and bank on line, work from home and speak and send messages via mobile appliances throughout all over the world. The research that is mobile transaction managing on database has begun since 1950 and skips the Link and Network Layer with support to improve mobile commerce. This paper focus on how effectually to make the new generation of mobile network protocol apply on mobile commerce and improve the mainly four properties required by mobile transactions. The four properties are respectively atomicity, consistency, isolation and durability. The purpose based on the mobile commerce environment and making mobile transactions complete and personal by means of the Destination Extension Header based on IPv6 and the Java Transaction Service. After experiment and testing, this paper verify that we improve the mobile commerce environment and make the mobile transaction more complete with the optimization of the Destination Extension Header based on IPv6 and the Java Transaction Service under the comparison with the environment on IPv4
More on volume dependence of spectral weight function
Spectral weight functions are easily obtained from two-point correlation
functions and they might be used to distinguish single-particle from
multi-particle states in a finite-volume lattice calculation, a problem crucial
for many lattice QCD simulations. In previous studies, it is shown that the
spectral weight function for a broad resonance shares the typical volume
dependence of a two-particle scattering state i.e. proportional to in a
large cubic box of size while the narrow resonance case requires further
investigation. In this paper, a generalized formula is found for the spectral
weight function which incorporates both narrow and broad resonance cases.
Within L\"uscher's formalism, it is shown that the volume dependence of the
spectral weight function exhibits a single-particle behavior for a extremely
narrow resonance and a two-particle behavior for a broad resonance. The
corresponding formulas for both and channels are derived. The
potential application of these formulas in the extraction of resonance
parameters are also discussed
Document Clustering Method Based on Frequent Co-occurring Words
PACLIC 20 / Wuhan, China / 1-3 November, 200
Radiative transitions in charmonium from twisted mass lattice QCD
We present a study for charmonium radiative transitions:
, and
using twisted mass lattice QCD gauge
configurations. The single-quark vector form factors for and
are also determined. The simulation is performed at a lattice
spacing of fm and the lattice size is . After
extrapolation of lattice data at nonzero to 0, we compare our results
with previous quenched lattice results and the available experimental values.Comment: typeset with revtex, 15 pages, 11 figures, 4 table
Incorporating Neuro-Inspired Adaptability for Continual Learning in Artificial Intelligence
Continual learning aims to empower artificial intelligence (AI) with strong
adaptability to the real world. For this purpose, a desirable solution should
properly balance memory stability with learning plasticity, and acquire
sufficient compatibility to capture the observed distributions. Existing
advances mainly focus on preserving memory stability to overcome catastrophic
forgetting, but remain difficult to flexibly accommodate incremental changes as
biological intelligence (BI) does. By modeling a robust Drosophila learning
system that actively regulates forgetting with multiple learning modules, here
we propose a generic approach that appropriately attenuates old memories in
parameter distributions to improve learning plasticity, and accordingly
coordinates a multi-learner architecture to ensure solution compatibility.
Through extensive theoretical and empirical validation, our approach not only
clearly enhances the performance of continual learning, especially over
synaptic regularization methods in task-incremental settings, but also
potentially advances the understanding of neurological adaptive mechanisms,
serving as a novel paradigm to progress AI and BI together
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