장하연 교수

TimeML is a markup language for events and temporal expressions in natural language, proposed in Pustejovsky et al. (2003) and latter standardized as ISO-TimeML (ISO 24617-1:2009). In this paper, we propose the further specification of ISO-TimeML for the Korean language with the concrete and thorough examination of real world texts. Since Korean differs significantly from English, which is the first and almost only extensively tested language with TimeML, one continuously run into theoretical an

This study investigates vocal emotion expression among older Korean speakers, focusing on differences between middle-aged (50-59) and elderly (80+) groups. Using data from the “Answering Questions” section of spontaneous speech in a large-scale corpus (Ok and Kim 2024), we analyzed 1,097 speakers—622 middle-aged and 475 elderly. Acoustic features, including fundamental frequency (F0), harmonics-to-noise ratio (HNR), shimmer, and speech rate (voiced segments per second), were extracted using Open

Recent work in natural language processing has increasingly examined whether large language models (LLMs) capture aspects of phonological structure, often on the basis of their performance on tasks such as grapheme-to-phoneme conversion, rhyme judgment, phoneme-based prompting, and phonologically constrained text generation. This paper examines how phonology is operationalized in this line of research, arguing that task-level success is sometimes taken as evidence for phonological knowledge in w

This study analyzes phonetic features in the natural speech of elderly Korean speakers using big data to investigate the effects of aging on speech production. The results revealed that elderly speakers exhibited reduced gender differences in F0, lower harmonics–to–noise ratio (HNR), and higher amplitude variation (Shimmer), reflecting typical aging–related changes in the vocal apparatus. In certain social communication contexts, the HNR and speech rate displayed phonetic characteristics that de

This study demonstrates that a muscle-based approach provides an explanatory account of the affrication and palatalization of Japanese /t/ that are difficult to explain using conventional phonologicalapproaches. The central asymmetry is that /t/ becomes [tɕ] with a posterior place before front high /i/, whereas it becomes [ts] without change in place of articulation beforenon-front high /ɯ/. The results of the simulations using the 3D tongue model of ArtiSynth show that the shape of the tongue f

This study proposes a new understanding of the target preference patterns in Korean umlaut based on the structure and contraction directions of tongue muscles. We demonstrate how the preference pattern ‘a > ʌ~ɨ > o > u,’ which previous approaches failed to explain adequately, can be understood through the lens of tongue muscle interactions. By focusing on the muscle structure of the tongue and the contraction directions of each muscle during vowel articulation, this study analyzes the interactio

This study examines how sub-syllabic overlap influences naming latency in Korean speakers’ L1 Korean and L2 English production using a low-load picture-naming priming paradigm. Phonological overlap conditions included onset, nucleus, body, rime, and syllable overlap. Reaction-time data were analyzed using linear mixed-effects models including random intercepts for participants and prime-target pairs, with trial order included as a covariate. In Korean L1, no phonological overlap condition remain

The sub-lexical phonological element accessed earliest during word production varies systematically across languages, but Korean remains unresolved, with different paradigms implicating the onset, the CV body, or the full syllable, and the nucleus more recently proposed (Jang 2026a, 2026b). In picture-only Korean L1, nucleus facilitation appears conditional: it emerges in simple analyses but does not consistently survive once target-word and trial-order variability are modeled (Jang 2026b), sugg

This paper introduces anew linguistic-focused approach for sentiment analysis (SA) of Korean. In order to overcome shortcomings of previous works that focused mainly on statistical methods, we made effective use of various linguistic features reflecting the nature of Korean. These features include contextual shifters, modal affixes, and the morphological dependency of chunk structures. Moreover, in order to eschew possible confusion caused by ambiguous words and to improve the results of SA, we

This study examines the acoustic characteristics of elderly speakers by comparing unscripted natural speech data from speakers under 60 and over 80 years old. Using a large-scale speech dataset, we analyze vowel space differences through formant frequencies (F1, F2) in a natural speech context. This research employs frequency-based formant analysis (Park et al. 2006, Park 2017, 2024). By adapting these techniques, this study explores how aging affects the vowel articulation and formant structure