The span of attention in KM ranges from explicit, concrete and quantifiable objects to tacit, subtle and qualitative processes, and many others in between:
Similarly, tools for monitoring and evaluation (M&E) of KM range from the (mostly) quantitative to the qualitative. In the “KM Framework or F Series” I have discussed the issues surrounding measurement of KM impacts. An adaptation of these discussions for M&E of KM for development will be published in early 2009 by IKM Emergent Research Programme and EADI (European Association of Development Research and Training Institutes).
Here is an inventory of M&E tools, classified by stages in value creation and by various user groups. The brown entries are largely quantitative; the blue italics entries are largely qualitative; and the rest are mixed.