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We introduce 1D-Touch, a novel text selection method that complements the carets-based sub-word selection by facilitating the selection of semantic units of words and above. This method employs a simple vertical slide gesture to expand and contract a selection area from a word. The expansion can be by words or by semantic chunks ranging from sub-phrases to sentences. This technique shifts the concept of text selection, from defining a range by locating the first and last words, towards a dynamic process of expanding and contracting a textual semantic entity. To understand the effects of our approach, we prototyped and tested two variants: WordTouch, which offers a straightforward word-by-word expansion, and ChunkTouch, which leverages NLP to chunk text into syntactic units, allowing the selection to grow by semantically meaningful units in response to the sliding gesture. Our evaluation, focused on the coarse-grained selection tasks handled by 1D-Touch, shows a 20% improvement over the default word-snapping selection method on Android.<\/jats:p>","DOI":"10.1145\/3626483","type":"journal-article","created":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T16:26:12Z","timestamp":1698855972000},"page":"463-482","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["1D-Touch: NLP-Assisted Coarse Text Selection via a Semi-Direct Gesture"],"prefix":"10.1145","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4447-0111","authenticated-orcid":false,"given":"Peiling","family":"Jiang","sequence":"first","affiliation":[{"name":"City University of Hong Kong, Hong Kong, China \/ University of California San Diego, La Jolla, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6198-0896","authenticated-orcid":false,"given":"Li","family":"Feng","sequence":"additional","affiliation":[{"name":"City University of Hong Kong, Hong Kong, China \/ Hong Kong University of Science and Technology (Guangzhou), Guangzhou, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0453-0757","authenticated-orcid":false,"given":"Fuling","family":"Sun","sequence":"additional","affiliation":[{"name":"University of California San Diego, La Jolla, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6505-3443","authenticated-orcid":false,"given":"Parakrant","family":"Sarkar","sequence":"additional","affiliation":[{"name":"City University of Hong Kong, Hong Kong, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9425-0881","authenticated-orcid":false,"given":"Haijun","family":"Xia","sequence":"additional","affiliation":[{"name":"University of California San Diego, La Jolla, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3267-3317","authenticated-orcid":false,"given":"Can","family":"Liu","sequence":"additional","affiliation":[{"name":"City University of Hong Kong, Hong Kong, China"}]}],"member":"320","published-online":{"date-parts":[[2023,11]]},"reference":[{"key":"e_1_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/3292147.3292178"},{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/3290607.3312850"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/1753846.1754093"},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/1125451.1125570"},{"key":"e_1_2_2_5_1","unstructured":"Gerardo Bort. 2019. 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