arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2408.06241cs.DScs.CG
收藏

瓦片自组装中的顺序非确定性:一个通用框架及其在高效温度-1正方形自组装中的应用

Sequential non-determinism in tile self-assembly: a general framework and an application to efficient temperature-1 self-assembly of squares

David Furcy, Scott M. Summers

AI总结:

本文提出“顺序非确定性”框架,用于分析温度-1瓦片自组装系统的概率正确性,并据此构造出仅用 O(log N + log(1/δ)) 种瓦片类型即可高概率自组装 N×N 正方形的系统,改进了先前最优界。

摘要:

在本文中,我们在 Chandran、Gopalkrishnan 和 Reif(SICOMP 2012)定义的 Winfree 抽象瓦片组装模型的概率变体的二维版本中工作,其中附着瓦片以有放回的方式均匀采样。首先,我们开发了一个称为“顺序非确定性”的框架,用于分析一个非确定性的温度-1瓦片组装系统(TAS)的概率正确性,在该系统中,大多数(但不是全部)瓦片附着是确定性的,并且非确定性附着总是以特定顺序发生。我们的主要顺序非确定性结果将这种 TAS 的概率正确性等同于一个有限的概率乘积,其中每个概率 1) 对应于在可能有两种不同类型瓦片附着的位置上正确类型瓦片附着的概率,并且 2) 忽略所有不影响非确定性附着的其他瓦片附着。然后我们证明顺序非确定性允许高效且几何上富有表现力的自组装。为此,我们构造性地证明,对于任意正整数 $N$ 和任意实数 $δ\in (0,1)$,存在一个 TAS,其以至少 $1 - δ$ 的概率自组装成一个 $N \times N$ 正方形,并且仅使用 $O\left( \log N + \log \frac{1}δ \right)$ 种瓦片类型。我们的界改进了 Cook、Fu 和 Schweller(SODA 2011)针对该问题的先前最先进界。

英文摘要:

In this paper, we work in a 2D version of the probabilistic variant of Winfree's abstract Tile Assembly Model defined by Chandran, Gopalkrishnan and Reif (SICOMP 2012) in which attaching tiles are sampled uniformly with replacement. First, we develop a framework called ``sequential non-determinism'' for analyzing the probabilistic correctness of a non-deterministic, temperature-1 tile assembly system (TAS) in which most (but not all) tile attachments are deterministic and the non-deterministic attachments always occur in a specific order. Our main sequential non-determinism result equates the probabilistic correctness of such a TAS to a finite product of probabilities, each of which 1) corresponds to the probability of the correct type of tile attaching at a point where it is possible for two different types to attach, and 2) ignores all other tile attachments that do not affect the non-deterministic attachment. We then show that sequential non-determinism allows for efficient and geometrically expressive self-assembly. To that end, we constructively prove that for any positive integer $N$ and any real $δ\in (0,1)$, there exists a TAS that self-assembles into an $N \times N$ square with probability at least $1 - δ$ using only $O\left( \log N + \log \frac{1}δ \right)$ types of tiles. Our bound improves upon the previous state-of-the-art bound for this problem by Cook, Fu and Schweller (SODA 2011).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑