{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T01:32:24Z","timestamp":1787967144547,"version":"build-2784847793"},"reference-count":103,"publisher":"Public Library of Science (PLoS)","issue":"5","license":[{"start":{"date-parts":[[2025,5,28]],"date-time":"2025-05-28T00:00:00Z","timestamp":1748390400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Social Science Foundation of China","award":["24VJXG066"],"award-info":[{"award-number":["24VJXG066"]}]},{"DOI":"10.13039\/501100017611","name":"Social Science Foundation of Shaanxi Province","doi-asserted-by":"publisher","award":["2023K007"],"award-info":[{"award-number":["2023K007"]}],"id":[{"id":"10.13039\/501100017611","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:sec id=\"sec024\">\n<jats:title>Background<\/jats:title>\n<jats:p>Language policy serves as an essential tool for governments to guide and regulate language development. However, China\u2019s current language policy faces challenges like outdated analytical methods, inefficiencies caused by policy misalignment, and the absence of predictive frameworks. This study provides a comprehensive overview of China\u2019s language policy by identifying key topics and predicting future trends.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec025\">\n<jats:title>Methods<\/jats:title>\n<jats:p>We employ the Latent Dirichlet Allocation topic model and Autoregressive Integrated Moving Average model systematically analyze and predict the evolution of China\u2019s language policy. By gathering a large-scale textual data of 1,420 policy texts from 2001\u20132023 on official websites, we achieve both topic extraction and evolution prediction.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec026\">\n<jats:title>Results<\/jats:title>\n<jats:p>This study reveals that: (1) Language life, language education, and language resources have high popularity indexes, and language education and language planning exhibit high expected values. (2) The theme intensity of most topics has been a significant upward trend since 2014, with significant fluctuations during T1-T2. (3) From 2001 to 2023, the actual and fitted values show an overall positive trend. In 2024\u20132028, the predicted value of language resources stabilizes after a brief decline in 2024, while other topics show upward trends.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec027\">\n<jats:title>Conclusions<\/jats:title>\n<jats:p>This study extracts 1,420 policy texts from official websites and outlines the following findings: (1) Language policies focus on maintaining a harmonious linguistic environment, addressing educational inequality, and protecting language resources. (2) Since 2014, most topics have exhibited fluctuating yet sustained growth trend, particularly in language education and research. (3) Except for language resources, the predicted values of the remaining six topics will show a growing trend from 2024 to 2028. Based on these findings, we propose policy recommendations such as strengthening language research, developing a multilingual education system, and optimizing language resource management.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0324644","type":"journal-article","created":{"date-parts":[[2025,5,28]],"date-time":"2025-05-28T18:16:42Z","timestamp":1748456202000},"page":"e0324644","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":4,"title":["Topic modeling and evolutionary trends of China\u2019s language policy: A LDA-ARIMA approach"],"prefix":"10.1371","volume":"20","author":[{"given":"Tianxin","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-0714-2417","authenticated-orcid":true,"given":"Xigang","family":"Ke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hui","family":"Shi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2025,5,28]]},"reference":[{"key":"pone.0324644.ref001","volume-title":"Language policy","author":"B Spolsky","year":"2004"},{"key":"pone.0324644.ref002","first-page":"3","article-title":"Theoretical perspectives in language policy: an overview","volume-title":"An introduction to language policy: theory and method","author":"T Ricento","year":"2006"},{"key":"pone.0324644.ref003","doi-asserted-by":"crossref","unstructured":"Xu R. Breakthroughs and challenges of machine translation in the era of artificial intelligence. In: 2023 8th International Conference on Information Systems Engineering (ICISE). IEEE. 2023. 520\u20133. doi: 10.1109\/icise60366.2023.00116","DOI":"10.1109\/ICISE60366.2023.00116"},{"key":"pone.0324644.ref004","volume-title":"Language-in-education policies: The discursive construction of intercultural relations","author":"AJ Liddicoat","year":"2013"},{"key":"pone.0324644.ref005","first-page":"103","article-title":"Language planning and policy","volume-title":"Sociolinguistics and language teaching","author":"TG Wiley","year":"1996"},{"issue":"3","key":"pone.0324644.ref006","doi-asserted-by":"crossref","first-page":"370","DOI":"10.1075\/babel.00043.luo","article-title":"China\u2019s language services as an emerging industry","volume":"64","author":"H Luo","year":"2018","journal-title":"Babel"},{"key":"pone.0324644.ref007","doi-asserted-by":"crossref","DOI":"10.1007\/978-3-319-70926-0","volume-title":"Language planning in the post-communist era: The struggles for language control in the new order in Eastern Europe, Eurasia and China","author":"E Andrews","year":"2018"},{"issue":"2","key":"pone.0324644.ref008","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1080\/14664208.2023.2259154","article-title":"Individual agency in language-in-education policy: a story of Chinese heritage language schools in multilingual Brussels","volume":"25","author":"X Li","year":"2023","journal-title":"Curr Issues Lang Plan"},{"issue":"3","key":"pone.0324644.ref009","doi-asserted-by":"crossref","first-page":"441","DOI":"10.1093\/scipol\/scab091","article-title":"How policies emerge and interact with each other? A bibliometric analysis of policies in China","volume":"49","author":"C Zhang","year":"2022","journal-title":"Sci Public Policy"},{"key":"pone.0324644.ref010","doi-asserted-by":"crossref","unstructured":"Ye J, Jing X, Li J. Sentiment analysis using modified LDA. In: Signal and Information Processing, Networking and Computers: Proceedings of the 3rd International Conference on Signal and Information Processing, Networking and Computers (ICSINC). Springer Singapore. 205\u201312.","DOI":"10.1007\/978-981-10-7521-6_25"},{"issue":"2","key":"pone.0324644.ref011","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1080\/01434632.2017.1340478","article-title":"Language policies and sociolinguistic domains in the context of minority groups in China","volume":"39","author":"A Feng","year":"2017","journal-title":"J Multiling Multicult Dev"},{"key":"pone.0324644.ref012","doi-asserted-by":"crossref","DOI":"10.5040\/9781350223967","volume-title":"Who\u2019s afraid of China?: the challenge of Chinese soft power","author":"DM Barr","year":"2011"},{"key":"pone.0324644.ref013","first-page":"5","article-title":"Current commercial machine translation systems and computer-based translation tools: system types and their uses","volume":"17","author":"J Hutchins","year":"2005","journal-title":"Int J Transl"},{"key":"pone.0324644.ref014","first-page":"51","article-title":"Multiculturalism and multilingual education for minority ethnic groups in China: Examples of Southwest China and Xinjiang Uygur regions and the goal of educational equality","author":"Y Wang","year":"2016","journal-title":"Learning from Difference: Comparative Accounts of Multicultural Education"},{"key":"pone.0324644.ref015","first-page":"399","article-title":"Artificial intelligence policy: a primer and roadmap","volume":"51","author":"R Calo","journal-title":"UCDL Rev"},{"issue":"7","key":"pone.0324644.ref016","doi-asserted-by":"crossref","first-page":"962","DOI":"10.1016\/j.techfore.2006.05.025","article-title":"International climate regimes: Effects of delayed participation","volume":"74","author":"I Keppo","year":"2007","journal-title":"Technol Forecast Soc Change"},{"key":"pone.0324644.ref017","doi-asserted-by":"crossref","first-page":"318","DOI":"10.1016\/j.erss.2018.07.031","article-title":"Topic modeling method for analyzing social actor discourses on climate change, energy and food security","volume":"45","author":"LL Benites-Lazaro","year":"2018","journal-title":"Energy Res Soc Sci"},{"key":"pone.0324644.ref018","first-page":"1","article-title":"More than words: a textual analysis of monetary policy communication","volume":"54","author":"P Luangaram","year":"2017","journal-title":"PIER Discussion Papers"},{"issue":"9","key":"pone.0324644.ref019","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0238972","article-title":"India nudges to contain COVID-19 pandemic: A reactive public policy analysis using machine-learning based topic modelling","volume":"15","author":"R Debnath","year":"2020","journal-title":"PLoS One"},{"issue":"1","key":"pone.0324644.ref020","first-page":"993","article-title":"Latent dirichlet allocation","volume":"3","author":"D Blei","year":"2003","journal-title":"J Mach Learn Res"},{"issue":"3","key":"pone.0324644.ref021","doi-asserted-by":"crossref","first-page":"101055","DOI":"10.1016\/j.joi.2020.101055","article-title":"Monolingual and multilingual topic analysis using LDA and BERT embeddings","volume":"14","author":"Q Xie","year":"2020","journal-title":"J Informetr"},{"issue":"332","key":"pone.0324644.ref022","doi-asserted-by":"crossref","first-page":"1509","DOI":"10.1080\/01621459.1970.10481180","article-title":"Distribution of residual autocorrelations in autoregressive-integrated moving average time series models","volume":"65","author":"GEP Box","year":"1970","journal-title":"J Am Stat Assoc"},{"key":"pone.0324644.ref023","article-title":"Ethnographic methods in language policy","volume-title":"An introduction to language policy: theory and method","author":"S Canagarajah","year":"2006"},{"issue":"1","key":"pone.0324644.ref024","doi-asserted-by":"crossref","DOI":"10.1177\/106591290305600103","article-title":"The impact of public opinion on public policy: A review and an Agenda","volume":"56","author":"P Burstein","year":"2003","journal-title":"Polit Res Q"},{"issue":"5","key":"pone.0324644.ref025","doi-asserted-by":"crossref","first-page":"829","DOI":"10.1080\/0141987032000109050","article-title":"Linguistic capital: Language as a socio-economic resource among Kurdish and Arabic women in Turkey","volume":"26","author":"J Smits","year":"2003","journal-title":"Ethn Racial Stud"},{"key":"pone.0324644.ref026","unstructured":"Blachford DR. Language planning and bilingual education for linguistic minorities in china, a case study of the policy formulation and implementation process. 1999."},{"issue":"4","key":"pone.0324644.ref027","doi-asserted-by":"crossref","DOI":"10.1353\/lan.2014.0075","article-title":"Language management in the People\u2019s Republic of China","volume":"90","author":"B Spolsky","year":"2014","journal-title":"Language"},{"key":"pone.0324644.ref028","doi-asserted-by":"crossref","first-page":"147","DOI":"10.2167\/cilp092.0","article-title":"Rearticulating the case for micro language planning in a language ecology context","volume":"7","author":"RB Baldauf","year":"2006","journal-title":"Curr Issues Lang Plan"},{"issue":"4","key":"pone.0324644.ref029","doi-asserted-by":"crossref","first-page":"573","DOI":"10.1177\/0895904814550073","article-title":"Beliefs in context t: Understanding language policy implementation at a systems level","volume":"30","author":"M Hopkins","year":"2014","journal-title":"Educ Policy"},{"key":"pone.0324644.ref030","first-page":"1","article-title":"Language policy implementation in South Africa: how Kempton Park\u2019s great expectations are dashed in Tshwane","volume":"38","author":"AM Beukes","year":"2008","journal-title":"Stellenbosch Pap Linguist"},{"issue":"3","key":"pone.0324644.ref031","doi-asserted-by":"crossref","first-page":"363","DOI":"10.1080\/14664200802139604","article-title":"Language policy and language assessment: The relationship","volume":"9","author":"E Shohamy","year":"2008","journal-title":"Curr Issues Lang Plan"},{"key":"pone.0324644.ref032","doi-asserted-by":"crossref","DOI":"10.7551\/mitpress\/2988.003.0017","volume-title":"The evolution of language policies in China","author":"JT Dreyer","year":"2003"},{"issue":"7","key":"pone.0324644.ref033","doi-asserted-by":"crossref","first-page":"655","DOI":"10.1080\/01434632.2015.1127928","article-title":"Transnational experience, aspiration and family language policy","volume":"37","author":"Z Hua","year":"2016","journal-title":"J Multiling Multicult Dev"},{"key":"pone.0324644.ref034","doi-asserted-by":"crossref","first-page":"101365","DOI":"10.1016\/j.langsci.2021.101365","article-title":"Harmonious discourse analysis: approaching peoples\u2019 problems in a Chinese context","volume":"85","author":"G Huang","year":"2021","journal-title":"Lang Sci"},{"issue":"2","key":"pone.0324644.ref035","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1080\/02188791.2013.875650","article-title":"Neo-liberalism, globalization, language policy and practice issues in the Asia-Pacific region","volume":"34","author":"S Majhanovich","year":"2014","journal-title":"Asia Pac J Educ"},{"key":"pone.0324644.ref036","first-page":"77","article-title":"Economic considerations in language policy","volume-title":"An introduction to language policy: theory and method","author":"F Grin"},{"key":"pone.0324644.ref037","doi-asserted-by":"crossref","DOI":"10.4324\/9780203387962","volume-title":"Language policy: Hidden agendas and new approaches","author":"E Shohamy","year":"2006"},{"key":"pone.0324644.ref038","doi-asserted-by":"crossref","DOI":"10.4324\/9780429448843-12","article-title":"The economics of language policy and planning","volume-title":"The Routledge handbook of language policy and planning","author":"B Wickstr\u00f6m","year":"2023"},{"key":"pone.0324644.ref039","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1016\/j.langcom.2020.10.006","article-title":"Language policy and prospects: Metalinguistic discourses on social disruption and language maintenance in a transatlantic, minority community","volume":"76","author":"SS Dunmore","year":"2021","journal-title":"Lang Commun"},{"key":"pone.0324644.ref040","doi-asserted-by":"crossref","DOI":"10.1017\/CBO9780511546914","volume-title":"The text mining handbook: advanced approaches in analyzing unstructured data","author":"R Feldman","year":"2006"},{"key":"pone.0324644.ref041","doi-asserted-by":"crossref","first-page":"136237","DOI":"10.1016\/j.jclepro.2023.136237","article-title":"Dynamic evaluation of new energy vehicle policy based on text mining of PMC knowledge framework","volume":"392","author":"Q Liu","year":"2023","journal-title":"J Clean Prod"},{"key":"pone.0324644.ref042","doi-asserted-by":"crossref","first-page":"928965","DOI":"10.3389\/fpubh.2022.928965","article-title":"Lexical features of economic legal policy and news in china since the COVID-19 outbreak","volume":"10","author":"J Liu","year":"2022","journal-title":"Frontiers in Public Health"},{"key":"pone.0324644.ref043","doi-asserted-by":"crossref","DOI":"10.1007\/978-981-16-0100-2","volume-title":"Text data mining","author":"C Zong","year":"2021"},{"key":"pone.0324644.ref044","doi-asserted-by":"crossref","unstructured":"Agnihotri D, Verma K, Tripathi P. Pattern and cluster mining on text data. In: 2014 Fourth International Conference on Communication Systems and Network Technologies. IEEE. 2014:428\u201332. doi: 10.1109\/csnt.2014.92","DOI":"10.1109\/CSNT.2014.92"},{"issue":"6","key":"pone.0324644.ref045","doi-asserted-by":"crossref","first-page":"12","DOI":"10.5120\/19542-0784","article-title":"A review on knowledge discovery using text classification techniques in text mining","volume":"111","author":"C ShrihariR","year":"2015","journal-title":"IJCA"},{"issue":"5","key":"pone.0324644.ref046","first-page":"1","article-title":"Feature extraction and duplicate detection for text mining: a survey","volume":"16","author":"R Ramya","year":"2017","journal-title":"Glob J Comput Sci Technol"},{"key":"pone.0324644.ref047","volume-title":"Text data management and analysis: a practical introduction to information retrieval and text mining","author":"C Zhai","year":"2016"},{"issue":"2","key":"pone.0324644.ref048","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1145\/3057270","article-title":"Current state of text sentiment analysis from opinion to emotion mining","volume":"50","author":"A Yadollahi","year":"2017","journal-title":"ACM Comput Surv"},{"key":"pone.0324644.ref049","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1016\/j.compind.2019.04.018","article-title":"Industry 4.0: Emerging themes and future research avenues using a text mining approach","volume":"109","author":"F Galati","year":"2019","journal-title":"Comput Ind"},{"key":"pone.0324644.ref050","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.ijmedinf.2019.02.008","article-title":"A systematic review of natural language processing and text mining of symptoms from electronic patient-authored text data","volume":"125","author":"C Dreisbach","year":"2019","journal-title":"Int J Med Inform"},{"key":"pone.0324644.ref051","doi-asserted-by":"crossref","unstructured":"Yi J, Nasukawa T, Bunescu R, Niblack W. Sentiment analyzer: extracting sentiments about a given topic using natural language processing techniques. In: Third IEEE International Conference on Data Mining. IEEE Comput. Soc. 2003:427\u201334. doi: 10.1109\/icdm.2003.1250949","DOI":"10.1109\/ICDM.2003.1250949"},{"key":"pone.0324644.ref052","doi-asserted-by":"crossref","DOI":"10.4324\/9780203813119","volume-title":"Language policies in education","author":"J Tollefson","year":"2012"},{"key":"pone.0324644.ref053","volume-title":"Language policies and practices for helping immigrants and second-generation students succeed","author":"G Christensen","year":"2007"},{"key":"pone.0324644.ref054","unstructured":"May S. Deconstructing the instrumental\/identity divide in language policy debates. 2005."},{"key":"pone.0324644.ref055","doi-asserted-by":"crossref","unstructured":"Lempert RJ. Shaping the next one hundred years: new methods for quantitative, long-term policy analysis. 2003.","DOI":"10.7249\/MR1626"},{"key":"pone.0324644.ref056","doi-asserted-by":"crossref","first-page":"612","DOI":"10.1080\/02699206.2017.1302512","article-title":"Multilingual issues in qualitative research","volume":"31","author":"J Oxley","year":"2017","journal-title":"Clin Linguist Phon"},{"key":"pone.0324644.ref057","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1016\/j.neucom.2017.01.026","article-title":"Machine learning on big data: Opportunities and challenges","volume":"237","author":"L Zhou","year":"2017","journal-title":"Neurocomputing"},{"issue":"1","key":"pone.0324644.ref058","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3390\/bdcc4010001","article-title":"Text mining in big data analytics","volume":"4","author":"H Hassani","year":"2020","journal-title":"BDCC"},{"key":"pone.0324644.ref059","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1016\/j.techfore.2016.01.015","article-title":"Topic analysis and forecasting for science, technology and innovation: Methodology with a case study focusing on big data research","volume":"105","author":"Y Zhang","year":"2016","journal-title":"Technol Forecast Soc Change"},{"issue":"2","key":"pone.0324644.ref060","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1108\/IJWIS-10-2019-0048","article-title":"RDF graph mining for cluster-based theme identification","volume":"16","author":"S Eddamiri","year":"2020","journal-title":"IJWIS"},{"key":"pone.0324644.ref061","article-title":"Theme development in qualitative content analysis and thematic analysis","author":"M Vaismoradi","year":"2016","journal-title":"J Adv Nurs"},{"key":"pone.0324644.ref062","doi-asserted-by":"crossref","unstructured":"Chabi A, Kboubi F, Ahmed M. Thematic analysis and visualization of textual corpus. 2011.","DOI":"10.5121\/ijcses.2011.2402"},{"issue":"2","key":"pone.0324644.ref063","first-page":"332","article-title":"Big social data analytics in journalism and mass communication: Comparing dictionary-based text analysis and unsupervised topic modeling","volume":"93","author":"L Guo","year":"2016","journal-title":"J Mass Commun Q"},{"issue":"2","key":"pone.0324644.ref064","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1007\/s10915-016-0323-5","article-title":"A grid-insensitive LDA method on triangular grids solving the system of euler equations","volume":"71","author":"H Chizari","year":"2016","journal-title":"J Sci Comput"},{"key":"pone.0324644.ref065","doi-asserted-by":"crossref","DOI":"10.1017\/9781108639286","volume-title":"Sentiment analysis: mining opinions, sentiments, and emotions","author":"B Liu","year":"2020"},{"key":"pone.0324644.ref066","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1016\/j.envsoft.2018.06.004","article-title":"Time series analysis with explanatory variables: A systematic literature review","volume":"107","author":"PM Ma\u00e7aira","year":"2018","journal-title":"Environ Model Softw"},{"issue":"2","key":"pone.0324644.ref067","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1109\/MCI.2009.932254","article-title":"Time Series Prediction Using Support Vector Machines: A Survey","volume":"4","author":"N Sapankevych","year":"2009","journal-title":"IEEE Comput Intell Mag"},{"issue":"7","key":"pone.0324644.ref068","doi-asserted-by":"crossref","first-page":"8311","DOI":"10.1016\/j.eswa.2011.01.017","article-title":"An automatic diabetes diagnosis system based on LDA-wavelet support vector machine classifier","volume":"38","author":"D \u00c7ali\u015fir","year":"2011","journal-title":"Expert Syst Appl"},{"issue":"7","key":"pone.0324644.ref069","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1145\/3462478","article-title":"Topic Modeling Using Latent Dirichlet allocation","volume":"54","author":"U Chauhan","year":"2021","journal-title":"ACM Comput Surv"},{"key":"pone.0324644.ref070","doi-asserted-by":"crossref","unstructured":"Alsmearat K, Al-Ayyoub M, Al-Shalabi R. An extensive study of the Bag-of-Words approach for gender identification of Arabic articles. In: 2014 IEEE\/ACS 11th International Conference on Computer Systems and Applications (AICCSA). IEEE. 2014:601\u20138. doi: 10.1109\/aiccsa.2014.7073254","DOI":"10.1109\/AICCSA.2014.7073254"},{"key":"pone.0324644.ref071","doi-asserted-by":"crossref","unstructured":"Tuarob S, Pouchard LC, Giles CL. Automatic tag recommendation for metadata annotation using probabilistic topic modeling. In: Proceedings of the 13th ACM\/IEEE-CS Joint Conference on Digital Libraries. 2013.","DOI":"10.1145\/2467696.2467706"},{"issue":"11","key":"pone.0324644.ref072","doi-asserted-by":"crossref","first-page":"15169","DOI":"10.1007\/s11042-018-6894-4","article-title":"Latent Dirichlet allocation (LDA) and topic modeling: models, applications, a survey","volume":"78","author":"H Jelodar","year":"2018","journal-title":"Multimed Tools Appl"},{"key":"pone.0324644.ref073","doi-asserted-by":"crossref","unstructured":"Blei D, Ng A, Jordan M. Latent dirichlet allocation. In: Adv Neural Inf Process Syst. 2001.","DOI":"10.7551\/mitpress\/1120.003.0082"},{"issue":"10","key":"pone.0324644.ref074","doi-asserted-by":"crossref","first-page":"1301","DOI":"10.3390\/e23101301","article-title":"Selection of the optimal number of topics for LDA topic model-taking patent policy analysis as an example","volume":"23","author":"J Gan","year":"2021","journal-title":"Entropy (Basel)"},{"key":"pone.0324644.ref075","unstructured":"Siami-Namini S, Namin AS. Forecasting economics and financial time series: ARIMA vs. LSTM. In: arXiv preprint. 2018."},{"key":"pone.0324644.ref076","doi-asserted-by":"crossref","unstructured":"Ariyo AA, Adewumi AO, Ayo CK. Stock price prediction using the ARIMA model. In: 2014 UKSim-AMSS 16th International Conference on Computer Modelling and Simulation. IEEE. 2014:106\u201312. doi: 10.1109\/uksim.2014.67","DOI":"10.1109\/UKSim.2014.67"},{"issue":"3","key":"pone.0324644.ref077","first-page":"1099","article-title":"Hydrological drought forecasting using ARIMA models (case study: Karkheh basin)","volume":"3","author":"O Bazrafshan","year":"2015","journal-title":"Ecopersia"},{"key":"pone.0324644.ref078","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1016\/j.cam.2018.07.008","article-title":"A hybrid ARIMA\u2013SVM model for the study of the remaining useful life of aircraft engines","volume":"346","author":"C Ord\u00f3\u00f1ez","year":"2019","journal-title":"J Comput Appl Math"},{"issue":"6","key":"pone.0324644.ref079","doi-asserted-by":"crossref","first-page":"716","DOI":"10.1109\/TAC.1974.1100705","article-title":"A new look at the statistical model identification","volume":"19","author":"H Akaike","year":"1974","journal-title":"IEEE Trans Automat Contr"},{"key":"pone.0324644.ref080","doi-asserted-by":"crossref","DOI":"10.1214\/aos\/1176344136","article-title":"Estimating the dimension of a model","volume":"6","author":"G Schwarz","year":"1978","journal-title":"Ann Statist"},{"key":"pone.0324644.ref081","volume-title":"Time series analysis: forecasting and control","author":"G Box","year":"2015"},{"key":"pone.0324644.ref082","doi-asserted-by":"crossref","DOI":"10.1007\/978-1-4757-3261-0","volume-title":"Time series analysis and its applications","author":"R Shumway","year":"2000"},{"key":"pone.0324644.ref083","doi-asserted-by":"crossref","unstructured":"Hasan M, Rahman A, Karim M, Khan M, Islam M. Normalized approach to find optimal number of topics in latent dirichlet allocation (lda). In: Proceedings of International Conference on Trends in Computational and Cognitive Engineering: Proceedings of TCCE. Springer Singapore. 2020:341\u201354.","DOI":"10.1007\/978-981-33-4673-4_27"},{"key":"pone.0324644.ref084","unstructured":"Newman D, Lau J, Grieser K, Baldwin T. Automatic evaluation of topic coherence. In: Human language technologies: The 2010 annual conference of the North American chapter of the association for computational linguistics. 2010."},{"key":"pone.0324644.ref085","doi-asserted-by":"crossref","unstructured":"Mushtaq R. Augmented dickey fuller test. 2011.","DOI":"10.2139\/ssrn.1911068"},{"key":"pone.0324644.ref086","unstructured":"As\u2019ad M. Finding the best ARIMA model to forecast daily peak electricity demand. 2012."},{"key":"pone.0324644.ref087","doi-asserted-by":"crossref","unstructured":"Yamak P, Yujian L, Gadosey P. A comparison between arima, lstm, and gru for time series forecasting. In: Proceedings of the 2019 2nd International Conference on Algorithms, Computing and Artificial Intelligence. 2019.","DOI":"10.1145\/3377713.3377722"},{"key":"pone.0324644.ref088","doi-asserted-by":"crossref","first-page":"440","DOI":"10.1080\/13670050802148798","article-title":"Language policies of kazakhization and their influence on language attitudes and use","volume":"11","author":"J Smagulova","year":"2008","journal-title":"Int J Biling Educ Biling"},{"key":"pone.0324644.ref089","volume-title":"An introduction to language policy: theory and method","author":"T Ricento","year":"2005"},{"key":"pone.0324644.ref090","doi-asserted-by":"crossref","DOI":"10.1057\/9781137316202","volume-title":"What is language policy?","author":"D Johnson","year":"2013"},{"key":"pone.0324644.ref091","doi-asserted-by":"crossref","unstructured":"Massey AK, Eisenstein J, Anton AI, Swire PP. Automated text mining for requirements analysis of policy documents. In: 2013 21st IEEE International Requirements Engineering Conference (RE). IEEE. 2013:4\u201313. doi: 10.1109\/re.2013.6636700","DOI":"10.1109\/RE.2013.6636700"},{"key":"pone.0324644.ref092","first-page":"55","article-title":"Envisioning Chinese as a global language","volume":"6","author":"\u30c1\u30e7\u30a6\u30a2\u30eb\u30d0\u30fc\u30c8","year":"2022","journal-title":"Glob Stud"},{"key":"pone.0324644.ref093","doi-asserted-by":"crossref","DOI":"10.5539\/ies.v7n13p197","article-title":"Upholding the Malay Language and strengthening the English language policy: An education reform","volume":"7","author":"H Yamat","year":"2014","journal-title":"IES"},{"issue":"4","key":"pone.0324644.ref094","doi-asserted-by":"crossref","first-page":"425","DOI":"10.1007\/s42379-022-00122-z","article-title":"Development of educational attainment and gender equality in China: new evidence from the 7th National Census","volume":"6","author":"H Xu","year":"2022","journal-title":"China Popul Dev Stud"},{"issue":"1","key":"pone.0324644.ref095","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1007\/s10993-004-6561-7","article-title":"English language education in China: Policies, progress, and problems","volume":"4","author":"G Hu","year":"2005","journal-title":"Lang Policy"},{"issue":"7","key":"pone.0324644.ref096","article-title":"Modern methods of training foreign language teachers","volume":"9","author":"VV Chernysh","year":"2020","journal-title":"IJHE"},{"issue":"3","key":"pone.0324644.ref097","first-page":"10","article-title":"Theories and practices of China\u2019s language resources","volume":"3","author":"L Yuming","year":"2020","journal-title":"\u0421ociolinguistics"},{"issue":"14","key":"pone.0324644.ref098","doi-asserted-by":"crossref","first-page":"2574","DOI":"10.1080\/01419870.2020.1828598","article-title":"Putonghua vs. minority languages: distribution of language laws, regulations, and documents in mainland China","volume":"44","author":"H Zhang","year":"2020","journal-title":"Ethn Racial Stud"},{"issue":"1","key":"pone.0324644.ref099","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1093\/chinesejil\/jmu006","article-title":"From assimilation to autonomy: Realizing ethnic minority rights in China\u2019s national autonomous regions","volume":"13","author":"X Wu","year":"2014","journal-title":"Chin J Int Law"},{"key":"pone.0324644.ref100","doi-asserted-by":"crossref","first-page":"477","DOI":"10.3389\/fpubh.2020.00477","article-title":"Bibliometric analysis on COVID-19: A comparison of research between English and Chinese studies","volume":"8","author":"J Fan","year":"2020","journal-title":"Front Public Health"},{"key":"pone.0324644.ref101","doi-asserted-by":"crossref","unstructured":"Wang D, Ding N, Li P, Zheng H-T. Cline: Contrastive learning with semantic negative examples for natural language understanding. 2021.","DOI":"10.18653\/v1\/2021.acl-long.181"},{"issue":"3","key":"pone.0324644.ref102","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1080\/14664208.2019.1582943","article-title":"Language policy, linguistic landscape and residents\u2019 perception in Guangzhou, China: dissents and conflicts","volume":"21","author":"Y Han","year":"2019","journal-title":"Curr Issues Lang Plan"},{"key":"pone.0324644.ref103","doi-asserted-by":"crossref","first-page":"133","DOI":"10.4324\/9781315208671-8","article-title":"A decade of wielding soft power through Confucius institutes: some interim results","volume-title":"Soft power with Chinese characteristics","author":"F Hartig","year":"2019"}],"container-title":["PLOS One"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0324644","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,28]],"date-time":"2025-05-28T18:17:11Z","timestamp":1748456231000},"score":1,"resource":{"primary":{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0324644"}},"subtitle":[],"editor":[{"given":"Li-Pang","family":"Chen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]}],"short-title":[],"issued":{"date-parts":[[2025,5,28]]},"references-count":103,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2025,5,28]]}},"URL":"https:\/\/doi.org\/10.1371\/journal.pone.0324644","relation":{},"ISSN":["1932-6203"],"issn-type":[{"value":"1932-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,5,28]]}}}