Han, Yahong (Zhejiang University) | Wu, Fei (Zhejiang University) | Jia, Jinzhu (University of California, Berkeley) | Zhuang, Yueting (Zhejiang University) | Yu, Bin (University of California, Berkeley)
Multi-task learning aims at combining information across tasks to boost prediction performance, especially when the number of training samples is small and the number of predictors is very large. In this paper, we first extend the Sparse Discriminate Analysis (SDA) of Clemmensen et al.. We call this Multi-task Sparse Discriminate Analysis (MtSDA). MtSDA formulates multi-label prediction as a quadratic optimization problem whereas SDA obtains single labels via a nearest class mean rule. Second, we propose a class of equicorrelation matrices to use in MtSDA which includes the identity matrix. MtSDA with both matrices are compared with singletask learning (SVM and LDA SVM) and multi-task learning (HSML). The comparisons are made on real data sets in terms of AUC and F-measure. The data results show that MtSDA outperforms other methods substantially almost all the time and in some cases MtSDA with the equicorrelation matrix substantially outperforms MtSDA with identity matrix.
"Religion and religious worship continue to be central to the lives of millions of Americans. This is true now more than ever," the letter said. "Religious communities have rallied to protect their communities from the spread of this disease by making services available online, in parking lots, or outdoors, by indoor services with a majority of pews empty, and in numerous other creative ways that otherwise comply with social distancing and sanitation guidelines."
ROME - Chinese telecom equipment group Huawei Technologies criticized the Italian government's newly beefed-up powers to intervene in the development of fifth-generation (5G) telecom services, saying they discriminated against the company. Luigi De Vecchis, chairman of Huawei Italia, made the comment in a parliamentary hearing after the government moved by urgent decree last week to strengthen its existing "golden power" to intervene in the private sector. It did so due to concerns over the potential involvement of Huawei and fellow Chinese equipment maker, ZTE Corp., in the development of 5G networks, a government source has said. The United States has lobbied Italy and other European allies to avoid Huawei equipment and to also pay close scrutiny to ZTE, alleging the vendors could pose a security risk. Both companies have strongly denied any such risk.