So sánh phương pháp

	Web Scraping	Khảo sát trực tuyến
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Late 1990s–2000s	Mid-1990s (widespread scholarly adoption ~1995–2000)
Người khởi xướng	Early internet practitioners; systematised in research contexts from the late 1990s onward	Mick P. Couper, Don A. Dillman (early systematic frameworks)
Loại	Automated digital data collection technique	Quantitative / mixed-methods data collection technique
Công trình gốc	Mitchell, R. (2018). Web Scraping with Python: Collecting More Data from the Modern Web (2nd ed.). O'Reilly Media. ISBN: 978-1491985571	Couper, M. P. (2000). Web surveys: A review of issues and approaches. Public Opinion Quarterly, 64(4), 464–494.
Tên gọi khác	web harvesting, screen scraping, web crawling, automated data extraction	web survey, internet survey, e-survey, computer-assisted web interviewing
Liên quan	5	6
Tóm tắt	Web scraping is a computational data collection technique in which software automatically retrieves and extracts structured or semi-structured content from websites. Widely used in social science, computational linguistics, economics, and information science, it enables researchers to assemble large datasets from publicly accessible web sources — such as news archives, social media platforms, government portals, and online marketplaces — that would be impractical to collect manually.	An online survey is a structured data collection instrument hosted on a web platform and completed by respondents via internet-connected devices. It enables large-scale, geographically dispersed data gathering at low cost and with rapid turnaround. Respondents self-administer the questionnaire at their convenience, which reduces interviewer bias and permits automatic data capture. Online surveys are the dominant mode of survey research in social, behavioural, health, and market research today.