Results 11 to 20 of about 2,336,780 (253)

Research on the Top-Down Parsing Method for Context-Sensitive Graph Grammars. [PDF]

open access: yesPLoS ONE, 2015
The parsing problem is one of the key problems of graph grammars. The typical parsing algorithm uses the bottom-up method. The time-complexity of this method is high, and it is difficult to apply.
Yi Wang, XiaoQin Zeng, Han Ding
doaj   +3 more sources

Parsing macro grammars top down [PDF]

open access: yesInformation and Control, 1979
A top-down parsing scheme for macro grammars is proposed. It extends the recursive descent method frequently used in context-free parsing. It is shown to be decidable if a macro grammar is top-down parsable. Nearly matching lower and upper bounds for the complexity of the decision procedure are derived.
Mehlhorn, Kurt, Mehlhorn, K.
exaly   +6 more sources

Probabilistic Top-Down Parsing and Language Modeling [PDF]

open access: yesComputational Linguistics, 2021
This paper describes the functioning of a broad-coverage probabilistic top-down parser, and its application to the problem of language modeling for speech recognition. The paper first introduces key notions in language modeling and probabilistic parsing, and briefly reviews some previous approaches to using syntactic structure for language modeling. A
Brian Roark
doaj   +4 more sources

Top-down Discourse Parsing via Sequence Labelling [PDF]

open access: yesProceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Main Volume, 2021
We introduce a top-down approach to discourse parsing that is conceptually simpler than its predecessors (Kobayashi et al., 2020; Zhang et al., 2020). By framing the task as a sequence labelling problem where the goal is to iteratively segment a document into individual discourse units, we are able to eliminate the decoder and reduce the search space ...
Fajri Koto, Jey Han Lau, Timothy Baldwin
openaire   +5 more sources

PatCluster: A Top-Down Log Parsing Method Based on Frequent Words

open access: yesIEEE Access, 2023
Logs are a combination of static message type fields and dynamic variable fields, and the accuracy of log parsing affects the result of subsequent log analysis tasks.
Yu Bai, Yongwei Chi, Dan Zhao
doaj   +2 more sources

Bottom-Up/Top-Down Image Parsing with Attribute Grammar [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2009
This paper presents a simple attribute graph grammar as a generative representation for made-made scenes, such as buildings, hallways, kitchens, and living rooms, and studies an effective top-down/bottom-up inference algorithm for parsing images in the process of maximizing a Bayesian posterior probability or equivalently minimizing a description ...
Song-Chun Zhu
exaly   +6 more sources

Top-Down RST Parsing Utilizing Granularity Levels in Documents

open access: yesProceedings of the AAAI Conference on Artificial Intelligence, 2020
Some downstream NLP tasks exploit discourse dependency trees converted from RST trees. To obtain better discourse dependency trees, we need to improve the accuracy of RST trees at the upper parts of the structures. Thus, we propose a novel neural top-down RST parsing method.
Naoki Kobayashi   +4 more
openaire   +4 more sources

COSMO-Onset: A Neurally-Inspired Computational Model of Spoken Word Recognition, Combining Top-Down Prediction and Bottom-Up Detection of Syllabic Onsets

open access: yesFrontiers in Systems Neuroscience, 2021
Recent neurocognitive models commonly consider speech perception as a hierarchy of processes, each corresponding to specific temporal scales of collective oscillatory processes in the cortex: 30–80 Hz gamma oscillations in charge of phonetic analysis, 4 ...
Mamady Nabé   +3 more
doaj   +1 more source

On Parsing Programming Languages with Turing-Complete Parser

open access: yesMathematics, 2023
A new parsing method based on the semi-Thue system is described. Similar to, but with more efficient implementation than Markov normal algorithms, it can be used for parsing any recursively enumerable language.
Boštjan Slivnik, Marjan Mernik
doaj   +1 more source

Parameters of Cross-linguistic Variation in Expectation-based Minimalist Grammars (e-MGs)

open access: yesIJCoL, 2023
The fact that Parsing and Generation share the same grammatical knowledge is often considered the null hypothesis (Momma and Phillips 2018) but very few algorithms can take advantage of a cognitively plausible incremental procedure that operates roughly ...
Cristiano Chesi
doaj   +1 more source

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