Báo cáo khoa học: "SenseClusters: Unsupervised Clustering and Labeling of Similar Contexts" potx

... with clustering. We employ the hybrid clus- tering method known as Repeated Bisections, which offers nearly the quality of agglomerative clustering at the speed of partitional clustering. 3 Labeling ... features and unsupervised clustering. Our initial work (Purandare and Pedersen, 2004) focused on word sense discrimination, which takes as input contexts that each contain a...

Ngày tải lên: 08/03/2014, 04:22

... subject, one episode of action detec- tion and tracking, and one segment of the text. In order to annotate unambiguously, we need to detect and track both landmarks and actions. A landmark is a hallway ... equivalent of ”en- ter the door straight ahead of you”, as seen by the average length of EDSZ. Also, it is more common to say the equivalent of ”take a right at the end...

Ngày tải lên: 17/03/2014, 04:20

... 85% inhibition of BHLmL2 and BHAb, respectively, while 1 mm 2-mer- captoethanol caused 85% and 97% inhibition of BHLmL2 and BHAb, respectively. The influence of pH on the activities of the BH enzymes ... v) glycerol and 0.15 m NaCl at a flow rate of 0.4 mLÆmin )1 . Fractions of 0.4 mL were collected, and 20 lL of each fraction was assayed for BH activity. Fractions 24–26...

Ngày tải lên: 18/02/2014, 14:20

... overexpression approach of RpCAbr and RpCAtr, we cannot know the functional effect of changes of some key amino-acids. Origin and number of nonvertebrate CAs Although the bootstrap values of the deep branches ... 0.5 lL of BSA (10 mgÆmL )1 ), 1 lL of total RNA (1.24 lgÆlL )1 ), 2.5 lL of dNTP (4 mm total), 1.5 lL of Random Primer 9 (Ozyme, St-Quentin- en-Yvelines, France...

Ngày tải lên: 18/02/2014, 16:20

... (A) Expanded view of peaks at m ⁄ z 2800.36 and 2832.35 and the fragmentation of the peak at m ⁄ z 2800.36. (B) Expanded view of peaks at m ⁄ z 2934.36 and 2950.35 and the fragmentation of the ... C53S 2-Cys Prx. Expanded view of peaks at m ⁄ z 2800.36 and 2832.35 and the fragmentation of the peak at m ⁄ z 2832.35. 2-Cys Prx was digested with trypsin and prepared for...

Ngày tải lên: 18/02/2014, 17:20

... preparation of complex II. The four subunits of complex II are labeled on the left, and the positions of molecular weight standards are indicated on lane 2. X. Huo et al. Characterization of respiratory ... G250, and the four bands corresponding to subunits of porcine complex II were cut out and N-terminal sequenced by the Edman degradation method and amino acid analyzer in...

Ngày tải lên: 19/02/2014, 02:20

... 23S.5DG b pre-RNA, and the binding of a minimum of n Mg 2+ ions leads to formation of the active complex, whereas binding of a minimum of m Mn 2+ ions forms the inactive complex. The sizes of the active and ... ratio of Mn 2+ ⁄ Mg 2+ of approxi- mately 1 : 2 or higher inhibited G-dependent cleavage of 23S.5DG b RNA (and self-splicing of 23S.5, not shown). Quantificatio...

Ngày tải lên: 19/02/2014, 07:20

... spectrometry and the lability of the sulfogroup in mass spectrometry analysis allows recognition of the modification, and differentiation of sulfotyrosine and phosphotyrosine [38]. Characterization of the ... verification of tyrosine sulfation in a-PnIA and a-PnIB and revision of those sequences were made in an investigation of labile sulfo- and phospho- peptides by el...

Ngày tải lên: 19/02/2014, 12:20

... comparison of D U , D T , log 10 f with ∆ log 10 f quency (log 10 f). D U = U w ˜ U w is defined as the ratio of the actual number of users of word w (U w ) over the expected number of users of w ( ˜ U w ), ... in one of the German and English CELEX wordlists are automatically classified as such. This improved classifier results over tokens and types, as seen in Table 1 in the...

Ngày tải lên: 19/02/2014, 19:20

Ngày tải lên: 20/02/2014, 18:20