https://communities.sas.com/t5/SAS-Data-Science/Text-Topics/m-p/414679#M9883 <P>Hello,</P><P>i am using Text Topics node and there is no property for the algorithm that will be used to make the clustering.&nbsp;</P><P>Does anybody know if there is any default algorithm?</P><P>In Text Miner Help, it only says that the input is term weight.</P> Sun, 19 Nov 2017 19:35:53 GMT charismast0 2017-11-19T19:35:53Z https://communities.sas.com/t5/SAS-Data-Science/Text-Topics/m-p/414679#M9883 <P>Hello,</P><P>i am using Text Topics node and there is no property for the algorithm that will be used to make the clustering.&nbsp;</P><P>Does anybody know if there is any default algorithm?</P><P>In Text Miner Help, it only says that the input is term weight.</P> Sun, 19 Nov 2017 19:35:53 GMT https://communities.sas.com/t5/SAS-Data-Science/Text-Topics/m-p/414679#M9883 charismast0 2017-11-19T19:35:53Z https://communities.sas.com/t5/SAS-Data-Science/Text-Topics/m-p/416385#M9884 <P>The algorithm for text topic discovery is based on the SVD.&nbsp;One of the factors of the SVD&nbsp; gives a numTerm by K(number of topics) matrix of weights or loadings. That matrix is rotated to increase the separation between large and small term weights in each of those vectors. Terms with a larger weight in each of the K vectors "define" the topic and these vectors can be multiplied with any given document vector to produce document scores for its membership in each topic.</P> Mon, 27 Nov 2017 13:44:40 GMT https://communities.sas.com/t5/SAS-Data-Science/Text-Topics/m-p/416385#M9884 RussAlbright 2017-11-27T13:44:40Z