{"id":224533,"date":"2026-03-05T14:21:41","date_gmt":"2026-03-05T12:21:41","guid":{"rendered":"https:\/\/azbuki.bg\/?p=224533"},"modified":"2026-03-10T11:37:49","modified_gmt":"2026-03-10T09:37:49","slug":"lexaquery-a-hybrid-chatbot-system-for-university-student-information-services","status":"publish","type":"post","link":"https:\/\/azbuki.bg\/en\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/","title":{"rendered":"Lexaquery: a Hybrid Chatbot System for University Student Information Services"},"content":{"rendered":"<p><strong>George Pashev, Silvia Gaftandzhieva<\/strong><br \/>\n<em>University of Plovdiv Paisii Hilendarski, Plovdiv (Bulgaria)<\/em><\/p>\n<p><a href=\"https:\/\/doi.org\/10.53656\/math2026-1-4-lhc\">https:\/\/doi.org\/10.53656\/math2026-1-4-lhc<\/a><\/p>\n<p><strong>Abstract.<\/strong> Universities show a rapidly growing interest in using Artificial Intelligence tools. This paper presents LexaQuery, a new chatbot system for university information services that efficiently handles university information inquiries by combining computational linguistics with SQL database querying. Instead of relying on large, resource-intensive large language models (LLMs), LexaQuery uses rule-based natural language processing to translate student questions into structured SQL. The system has a three-tier architecture comprising language processing for query translation, knowledge extraction (from databases and web scraping), and a user interaction layer. Performance evaluation at the University of Plovdiv Paisii Hilendarski demonstrates that this hybrid approach provides significantly faster response times than neural network-based alternatives while maintaining satisfactory accuracy for domain-specific tasks. The paper discusses the system\u2019s advantages in terms of integration with existing university information systems, performance efficiency, explainability, and the ability to operate without extensive computational resources, as well as its linguistic flexibility and limitations in domain adaptation. This research contributes to developing practical, efficient chatbot systems for educational institutions with constrained technical infrastructure.<\/p>\n<p><em>Keywords:<\/em> computational linguistics, SQL generation, chatbot systems, natural language processing<\/p>\n<p><a href=\"https:\/\/azbuki.bg\/wp-content\/uploads\/2026\/03\/matematika_01_2026_georgi-pashvec.pdf\" target=\"_blank\" rel=\"noopener\">>> Download the article as a PDF file <<<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>George Pashev, Silvia Gaftandzhieva University of Plovdiv Paisii Hilendarski, Plovdiv (Bulgaria) https:\/\/doi.org\/10.53656\/math2026-1-4-lhc Abstract. Universities show a rapidly growing interest in using Artificial Intelligence tools. This paper presents LexaQuery, a new chatbot system for university information services that efficiently handles university information inquiries by combining computational linguistics with SQL database querying. Instead of relying on large, [&hellip;]<\/p>","protected":false},"author":124332423427287,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[]},"categories":[1],"tags":[16881,16879,16882,16880],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Lexaquery: a Hybrid Chatbot System for University Student Information Services - \u0410\u0437-\u0431\u0443\u043a\u0438<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lexaquery: a Hybrid Chatbot System for University Student Information Services - \u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"og:description\" content=\"George Pashev, Silvia Gaftandzhieva University of Plovdiv Paisii Hilendarski, Plovdiv (Bulgaria) https:\/\/doi.org\/10.53656\/math2026-1-4-lhc Abstract. Universities show a rapidly growing interest in using Artificial Intelligence tools. This paper presents LexaQuery, a new chatbot system for university information services that efficiently handles university information inquiries by combining computational linguistics with SQL database querying. Instead of relying on large, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/\" \/>\n<meta property=\"og:site_name\" content=\"\u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Azbuki55\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-05T12:21:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-10T09:37:49+00:00\" \/>\n<meta name=\"author\" content=\"\u201e\u0410\u0437-\u0431\u0443\u043a\u0438\u201c\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u201e\u0410\u0437-\u0431\u0443\u043a\u0438\u201c\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/\"},\"author\":{\"name\":\"\u201e\u0410\u0437-\u0431\u0443\u043a\u0438\u201c\",\"@id\":\"https:\/\/vocedu.azbuki.bg\/en\/#\/schema\/person\/de220d282eaa494f914ce0fd838645dd\"},\"headline\":\"Lexaquery: a Hybrid Chatbot System for University Student Information Services\",\"datePublished\":\"2026-03-05T12:21:41+00:00\",\"dateModified\":\"2026-03-10T09:37:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/\"},\"wordCount\":216,\"publisher\":{\"@id\":\"https:\/\/vocedu.azbuki.bg\/en\/#organization\"},\"keywords\":[\"chatbot systems\",\"computational linguistics\",\"natural language processing\",\"SQL generation\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/\",\"url\":\"https:\/\/azbuki.bg\/uncategorized\/lexaquery-a-hybrid-chatbot-system-for-university-student-information-services\/\",\"name\":\"Lexaquery: a Hybrid Chatbot System for University Student Information Services - 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