@inproceedings{McNee:2006:AEA:1125451.1125659, abstract = {Recommender systems have shown great potential to help users find interesting and relevant items from within a large information space. Most research up to this point has focused on improving the accuracy of recommender systems. We believe that not only has this narrow focus been misguided, but has even been detrimental to the field. The recommendations that are most accurate according to the standard metrics are sometimes not the recommendations that are most useful to users. In this paper, we propose informal arguments that the recommender community should move beyond the conventional accuracy metrics and their associated experimental methodologies. We propose new user-centric directions for evaluating recommender systems.}, acmid = {1125659}, address = {New York, NY, USA}, author = {McNee, Sean M. and Riedl, John and Konstan, Joseph A.}, booktitle = {CHI '06 extended abstracts on Human factors in computing systems}, doi = {10.1145/1125451.1125659}, interhash = {fe396fbce5daacd374196ad688e3f149}, intrahash = {4b9fddbd766a9247856641989a778b23}, isbn = {1-59593-298-4}, location = {Montr\&\#233;al, Qu\&\#233;bec, Canada}, numpages = {5}, pages = {1097--1101}, publisher = {ACM}, series = {CHI EA '06}, title = {Being accurate is not enough: how accuracy metrics have hurt recommender systems}, url = {http://doi.acm.org/10.1145/1125451.1125659}, year = 2006 } @article{moncalvo2006cantharelloid, abstract = {We reassessed the circumscription of the cantharelloid clade and identified monophyletic groups by using nLSU, nSSU, mtSSU and RPB2 sequence data. Results agreed with earlier studies that placed the genera Cantharellus, Craterellus, Hydnum, Clavulina, Membranomyces, Multiclavula, Sistotrema, Botryobasidium and the family Ceratobasidiaceae in that clade. Phylogenetic analyses support monophyly of all genera except Sistotrema, which was highly polyphyletic. Strongly supported monophyletic groups were: (i) Cantharellus-Craterellus, Hydnum, and the Sistotrema confluens group; (ii) Clavulina-Membranomyces and the S. brinkmannii-oblongisporum group, with Multiclavula being possibly sister of that clade; (iii) the Sistotrema eximum-octosporum group; (iv) Sistotrema adnatum and S. coronilla. Positions of Sistotrema raduloides and S. athelioides were unresolved, as were basal relationships. Botryobasidium was well supported as the sister taxon of all the above taxa, while Ceratobasidiaceae was the most basal lineage. The relationship between Tulasnella and members of the cantharelloid clade will require further scrutiny, although there is cumulative evidence that they are probably sister groups. The rates of molecular evolution of both the large and small nuclear ribosomal RNA genes (nuc-rDNA) are much higher in Cantharellus, Craterellus and Tulasnella than in the other cantharelloid taxa, and analyses of nuc-rDNA sequences strongly placed Tulasnella close to Cantharellus-Craterellus. In contrast analyses with RPB2 and mtSSU sequences placed Tulasnella at the base of the cantharelloid clade. Our attempt to reconstruct a "supertree" from tree topologies resulting from separate analyses that avoided phylogenetic reconstruction problems associated with missing data and/or unalignable sequences proved unsuccessful.}, author = {Moncalvo, J. M. and Nilsson, R. H. and Koster, B. and Dunham, S. M. and Bernauer, T. and Matheny, P. B. and Porter, T. M. and Margaritescu, S. and Weiss, M. and Garnica, S. and Danell, E. and Langer, G. and Langer, E. and Larsson, E. and Larsson, K. H. and Vilgalys, R.}, interhash = {f9a3bfd95aa0e748cadbeae6bd364dfa}, intrahash = {8df79eade21e47a9a7d1a68e31ae634f}, journal = {Mycologia}, month = {Nov-Dec}, number = 6, pages = {937-948}, title = {The cantharelloid clade: dealing with incongruent gene trees and phylogenetic reconstruction methods}, url = {/brokenurl#://000245858800011}, volume = 98, year = 2006 }