32. Relevance Metric
34. Diffusion Areas

33. Difference between Lenses and Filters

  BIM Lenses and Filters

Lenses and Filters are investigative tools of enquiry and domain analysis allowing the discovery of concepts and relations. The difference between (BIM) Lenses and Filters can be summarised as such: Lenses are additive and are deployed from the ‘investigator’s side’ of BIM Field observation while Filters are subtractive and are deployed from the ‘data side’. Lenses highlight observables that meet research criteria and identify their relations; example, an infrared lens highlights heat sources in a scene. Filters remove observables that do not meet the research criteria; example, data filters hides non-conforming data within a spreadsheet.