So sánh phương pháp

	Ghi chép thực địa đa nguồn	Ghi chép thực địa tam giác hóa
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1970s–1990s (multi-observer extensions formalised in mixed-methods era)	1970s–1980s
Người khởi xướng	Ethnographic research tradition; systematised by Emerson, Fretz & Shaw	Norman K. Denzin (triangulation); Yvonna Lincoln & Egon Guba (trustworthiness framework)
Loại	Qualitative data collection technique	Qualitative data collection and verification technique
Công trình gốc	Emerson, R. M., Fretz, R. I., & Shaw, L. L. (2011). Writing Ethnographic Fieldnotes (2nd ed.). University of Chicago Press. ISBN: 978-0226206837	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.
Tên gọi khác	multi-observer field notes, triangulated field notes, collaborative field notes, multi-site field notes	multi-source field notes, cross-observer field notes, triangulated observation notes, TFN
Liên quan	6	5
Tóm tắt	Multi-source field notes is a data collection approach in which two or more observers, sites, or vantage points contribute written records of naturally occurring events, interactions, and settings. By pooling notes from multiple sources, researchers cross-check individual impressions and capture aspects of a scene that any single observer would miss, strengthening descriptive richness and analytical trustworthiness.	Triangulated Field Notes is a qualitative data collection technique in which field notes are recorded independently by multiple observers, from multiple vantage points, or at multiple time points and then systematically compared to strengthen the credibility and completeness of observational data. Rooted in Denzin's triangulation framework and Lincoln and Guba's trustworthiness criteria, the approach counters observer bias by cross-checking accounts before analysis begins.