Results 41 to 50 of about 1,226,857 (290)

Sequence Comparison Alignment-Free Approach Based on Suffix Tree and L-Words Frequency

open access: yesThe Scientific World Journal, 2012
The vast majority of methods available for sequence comparison rely on a first sequence alignment step, which requires a number of assumptions on evolutionary history and is sometimes very difficult or impossible to perform due to the abundance of gaps ...
Inês Soares, Ana Goios, António Amorim
doaj   +1 more source

Draft genome sequence of the rubber tree Hevea brasiliensis

open access: yesBMC Genomics, 2013
Background Hevea brasiliensis, a member of the Euphorbiaceae family, is the major commercial source of natural rubber (NR). NR is a latex polymer with high elasticity, flexibility, and resilience that has played a critical role in the world economy since
Rahman Ahmad Yamin Abdul   +28 more
doaj   +1 more source

Estimating dispersal rates and locating genetic ancestors with genome-wide genealogies

open access: yeseLife
Spatial patterns in genetic diversity are shaped by individuals dispersing from their parents and larger-scale population movements. It has long been appreciated that these patterns of movement shape the underlying genealogies along the genome leading to
Matthew Osmond, Graham Coop
doaj   +1 more source

Natural Language Generation Using Dependency Tree Decoding for Spoken Dialog Systems

open access: yesIEEE Access, 2019
In this paper, we propose a new natural language generation (NLG) method for spoken dialog systems and demonstrate its capacity. Studies on NLG often employ sequence decoding, which generates the words comprising a sentence in sequential order and uses ...
Youngmin Park, Sangwoo Kang
doaj   +1 more source

SNP identification from RNA sequencing and linkage map construction of rubber tree for anchoring the draft genome. [PDF]

open access: yesPLoS ONE, 2015
Hevea brasiliensis, or rubber tree, is an important crop species that accounts for the majority of natural latex production. The rubber tree nuclear genome consists of 18 chromosomes and is roughly 2.15 Gb.
Jeremy R Shearman   +8 more
doaj   +1 more source

Tree of life based on genome context networks. [PDF]

open access: yesPLoS ONE, 2008
Efforts in phylogenomics have greatly improved our understanding of the backbone tree of life. However, due to the systematic error in sequence data, a sequence-based phylogenomic approach leads to well-resolved but statistically significant incongruence.
Guohui Ding   +8 more
doaj   +1 more source

Structural Analysis of Polarizing Indels Argues the Root of the Tree of Life is Near the Chloroflexi [PDF]

open access: yes, 2009
Determining which branches of the tree of life have derived features narrows down the possible location of the root. Currently the polarization of indels done by Lake _et al_.^1-5^ and the polarizing transitions of Cavalier-Smith^6^ arrive at ...
Philip E. Bourne, Ruben E. Valas
core   +2 more sources

Digital search trees and chaos game representation [PDF]

open access: yes, 2006
In this paper, we consider a possible representation of a DNA sequence in a quaternary tree, in which on can visualize repetitions of subwords. The CGR-tree turns a sequence of letters into a digital search tree (DST), obtained from the suffixes of the ...
Chauvin, Brigitte   +3 more
core   +3 more sources

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

open access: yesMolecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra   +10 more
wiley   +1 more source

Towards Bidirectional Hierarchical Representations for Attention-Based Neural Machine Translation

open access: yes, 2017
This paper proposes a hierarchical attentional neural translation model which focuses on enhancing source-side hierarchical representations by covering both local and global semantic information using a bidirectional tree-based encoder.
Chao, Lidia S.   +4 more
core   +1 more source

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