01345nas a2200157   4500008004100000245005000041210004900091260002300140520084900163653001501012653000801027100002001035700002201055700001901077856009101096       2007                        eng d00aSemantics or Standards for Curriculum Search?0 aSemantics or Standards for Curriculum Search  aNew York, NYc20073 aAligning digital library resources with national and state educational standards to help K-12 teachers search for relevant curriculum is an important issue in the digital library community. Aligning standards from different states promises to help teachers in one state find appropriate materials created and cataloged elsewhere. Although such alignments provide a powerful means for crosswalking standards and curriculum across states, alignment matrices are intrinsically sparse. Hence, we hypothesize that such sparseness may cause significant numbers of false negatives when used for searching curriculum. Our preliminary results confirm the false negative hypothesis, demonstrate the usefulness of term-based techniques in addressing the false negative problem, and explore ways to combine term occurrence data with standards correlations.10aAccounting10aBIS1 aMarshall, Byron1 aReitsma, Reindert1 aCyr, Martha, N  uhttps://dev.business.oregonstate.edu/biblio/semantics-or-standards-curriculum-search-001862nas a2200169   4500008004100000245008400041210006900125260000900194300001000203490000700213520128800220653000801508100002201516700001601538700001601554856012201570       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.  uhttps://dev.business.oregonstate.edu/biblio/spatialization-web-sites-using-weighted-frequency-model-navigation-data-000498nas a2200133   4500008004100000245007600041210006900117260000900186300001200195490000800207653000800215100002200223856011900245       1996                        eng d00aStructure and Support of Water Resources Management and Decision Making0 aStructure and Support of Water Resources Management and Decision  c1996  a253-2680 v17710aBIS1 aReitsma, Reindert  uhttps://dev.business.oregonstate.edu/biblio/structure-and-support-water-resources-management-and-decision-making-0