01858nas a2200169   4500008004100000245008400041210006900125260000900194300001000203490000700213520128800220653000801508100002201516700001601538700001601554856011801570       2004                        eng d00aSpatialization of Web Sites Using a Weighted Frequency Model of Navigation Data0 aSpatialization of Web Sites Using a Weighted Frequency Model of   c2004  a13-220 v553 aReitsma, Thabane, and MacLeod are interested in the display of document sets as visualized geometric spaces. Such spaces can use metrics and dimensions determined arbitrarily prior to analysis of data, or they may use secondary data (logged website transaction counts, perhaps) with techniques like factor analysis or MDS to find a structure. Using high transaction volume between an origin and a destination as an indicator of a small distance and a low volume as an indicator of a large distance, a transaction log can provide input to MDS. One problem is the possible origination of multiple sessions from the same address where one can not determine if consecutive requests are part of the same transaction and thus frequencies may be invalid.  They suggest the use of the probability that a count is a transaction as a weight rather the count alone, with this probability depending upon the time separation between an origin and a destination with less time indicating a higher probability. A transaction log for a website for undergraduate engineering learning was analyzed in this manner and weighted transaction counts were compared to the use of  straight count inputs to MDS using the Euclidean metric and four dimensions. Weighted results were not significantly different.10aBIS1 aReitsma, Reindert1 aThabane, L.1 aMacLeod, J.  u/biblio/spatialization-web-sites-using-weighted-frequency-model-navigation-data-0