So sánh phương pháp

	Bộ sưu tập tài liệu tam giác hóa	Phân tích nội dung
Lĩnh vực	Phương pháp luận khảo sát	Định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1978 (triangulation); 2009 (document analysis as method)	Systematised through Krippendorff's methodology work; 4th edition 2018
Người khởi xướng	Norman K. Denzin (triangulation principle); Glenn Bowen (document analysis formalization)	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research
Loại	Qualitative/mixed-methods data collection strategy	Qualitative / mixed-method research technique
Công trình gốc	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661
Tên gọi khác	documentary triangulation, multi-source document collection, cross-source document analysis, data triangulation via documents	İçerik Analizi, systematic content coding, quantitative content analysis
Liên quan	4	5
Tóm tắt	Triangulated document collection is a qualitative data collection strategy in which documents from multiple independent sources are gathered and cross-checked against one another. By drawing on different document types — such as official records, personal archives, institutional reports, and media artifacts — the researcher reduces reliance on any single source and strengthens the credibility of the evidence base. The approach applies Denzin's data triangulation principle directly to documentary material.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.