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In this work we introduce a conditional accelerated lazy stochastic gradient descent algorithm with optimal number of calls to a stochastic first-order oracle and convergence rate $O\left(\frac{1}{\varepsilon^2}\right)$ improving over the…

机器学习 · 计算机科学 2018-02-19 Guanghui Lan , Sebastian Pokutta , Yi Zhou , Daniel Zink

Parsing sentences into syntax trees can benefit downstream applications in NLP. Transition-based parsers build trees by executing actions in a state transition system. They are computationally efficient, and can leverage machine learning to…

计算与语言 · 计算机科学 2020-10-29 Kaiyu Yang , Jia Deng

Scribble-supervised semantic segmentation has gained much attention recently for its promising performance without high-quality annotations. Due to the lack of supervision, confident and consistent predictions are usually hard to obtain.…

计算机视觉与模式识别 · 计算机科学 2021-02-22 Zhiyi Pan , Peng Jiang , Yunhai Wang , Changhe Tu , Anthony G. Cohn

Accurate terminology translation is crucial for ensuring the practicality and reliability of neural machine translation (NMT) systems. To address this, lexically constrained NMT explores various methods to ensure pre-specified words and…

计算与语言 · 计算机科学 2021-08-13 Gyubok Lee , Seongjun Yang , Edward Choi

We describe a data structure that supports access, rank and select queries, as well as symbol insertions and deletions, on a string $S[1,n]$ over alphabet $[1..\sigma]$ in time $O(\lg n/\lg\lg n)$, which is optimal even on binary sequences…

数据结构与算法 · 计算机科学 2013-02-04 Gonzalo Navarro , Yakov Nekrich

The explosion of large-scale data in fields such as finance, e-commerce, and social media has outstripped the processing capabilities of single-machine systems, driving the need for distributed statistical inference methods. Traditional…

机器学习 · 统计学 2024-09-02 Jingguo Lan , Hongmei Lin , Xueqin Wang

Transcripts generated by automatic speech recognition (ASR) systems for spoken documents lack structural annotations such as paragraphs, significantly reducing their readability. Automatically predicting paragraph segmentation for spoken…

计算与语言 · 计算机科学 2021-10-12 Qinglin Zhang , Qian Chen , Yali Li , Jiaqing Liu , Wen Wang

Unsupervised constituency parsing has been explored much but is still far from being solved. Conventional unsupervised constituency parser is only able to capture the unlabeled structure of sentences. Towards unsupervised full constituency…

计算与语言 · 计算机科学 2021-11-01 Letian Peng , Zuchao Li , Hai Zhao

Generating semantically coherent text requires a robust internal representation of linguistic structures, which traditional embedding techniques often fail to capture adequately. A novel approach, Latent Lexical Projection (LLP), is…

计算与语言 · 计算机科学 2025-03-26 Ziad Shaker , Brendan Ashdown , Hugo Fitzalan , Alistair Heathcote , Jocasta Huntington

Dense vector representations for sentences made significant progress in recent years as can be seen on sentence similarity tasks. Real-world phrase retrieval applications, on the other hand, still encounter challenges for effective use of…

计算与语言 · 计算机科学 2024-05-14 Eyal Orbach , Lev Haikin , Nelly David , Avi Faizakof

Semantic parsing, i.e., the automatic derivation of meaning representation such as an instantiated predicate-argument structure for a sentence, plays a critical role in deep processing of natural language. Unlike all other top systems of…

计算与语言 · 计算机科学 2014-01-25 Hai Zhao , Xiaotian Zhang , Chunyu Kit

In this work we propose a simple and efficient framework for learning sentence representations from unlabelled data. Drawing inspiration from the distributional hypothesis and recent work on learning sentence representations, we reformulate…

计算与语言 · 计算机科学 2018-03-09 Lajanugen Logeswaran , Honglak Lee

Traditional syntax models typically leverage part-of-speech (POS) information by constructing features from hand-tuned templates. We demonstrate that a better approach is to utilize POS tags as a regularizer of learned representations. We…

计算与语言 · 计算机科学 2016-06-09 Yuan Zhang , David Weiss

Graph-based methods, which decompose the score of a dependency tree into scores of dependency arcs, are popular in dependency parsing for decades. Recently, \citet{Yang2022Span} propose a headed-span-based method that decomposes the score…

计算与语言 · 计算机科学 2022-03-10 Songlin Yang , Kewei Tu

In recent years, neural networks have proven to be effective in Chinese word segmentation. However, this promising performance relies on large-scale training data. Neural networks with conventional architectures cannot achieve the desired…

计算与语言 · 计算机科学 2017-11-07 Jingjing Xu , Xu Sun , Sujian Li , Xiaoyan Cai , Bingzhen Wei

After presenting a novel O(n^3) parsing algorithm for dependency grammar, we develop three contrasting ways to stochasticize it. We propose (a) a lexical affinity model where words struggle to modify each other, (b) a sense tagging model…

cmp-lg · 计算机科学 2008-02-06 Jason Eisner

Token representations in high-dimensional latent spaces often exhibit redundancy, limiting computational efficiency and reducing structural coherence across model layers. Hierarchical latent space folding introduces a structured…

计算与语言 · 计算机科学 2025-08-11 Fenella Harcourt , Naderdel Piero , Gilbert Sutherland , Daphne Holloway , Harriet Bracknell , Julian Ormsby

Large language models (LLMs) have revolutionized the landscape of Natural Language Processing systems, but are computationally expensive. To reduce the cost without sacrificing performance, previous studies have explored various approaches…

计算与语言 · 计算机科学 2024-10-01 Chia-Hsuan Lee , Hao Cheng , Mari Ostendorf

We present a novel technique to remove spurious ambiguity from transition systems for dependency parsing. Our technique chooses a canonical sequence of transition operations (computation) for a given dependency tree. Our technique can be…

计算与语言 · 计算机科学 2012-06-29 Shay B. Cohen , Carlos Gómez-Rodríguez , Giorgio Satta

Neural semantic parsing has achieved impressive results in recent years, yet its success relies on the availability of large amounts of supervised data. Our goal is to learn a neural semantic parser when only prior knowledge about a limited…

计算与语言 · 计算机科学 2019-09-13 Yibo Sun , Duyu Tang , Nan Duan , Yeyun Gong , Xiaocheng Feng , Bing Qin , Daxin Jiang