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Concept Map †

The concept map is graphical representation to allow people to present their conceptual knowledge. The concept map consists concept words, links, and link labels.

Concept map has been used to capture conceptual change for learners. It also has been used to compare expert knowledge structure with novices. We use Cmap to capture searchers’ knowledge structure on search topics.

cmap.png

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To understand learning by searching †

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Three types of node †

cmap-a.png

This figure shows the concept map drawn by a participant for the environment topic. The node enclosed dotted line show the center node. The nodes enclosed red line with the same number show that the participant checked these nodes as having the same meaning..

We divided nodes into three types.

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Number of Nodes at Each Distance from the Center Node †

cmap-d1.png

To analyze differences in the position of each node, we defined distance in each node. Distance in each node is measured by the number of links from the center node to each node. In this figure, these nodes are distance 1 and these nodes are distance 2 and these nodes are distance 3.

cmap-d2.png

Moreover, to clear the differences between scenarios and topics, we calculated the amount of change for each distance from the pre to post-search concept maps by subtracting from the number of nodes at each distance in post-search map to those in pre-search map. If the number of nodes in distance n in the post-search map is more than those in the pre-search map, amount of change N is positive value. If the number of nodes in distance N in the post-search map is less than those in the pre-search map, amount of change N is negative value. In these maps, amount of change in each distance is as follows.

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references †

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