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Knowledge-based question answering by tree-to-sequence learning
Neurocomputing, 2020In recent years, many knowledge bases have been constructed or populated. These knowledge bases link real-world entities by their relationships on a large scale, serving as good resources to answer factoid questions. To answer a natural language question
Shuguang Zhu, Xiang Cheng, Sen Su
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Using ggtree to Visualize Data on Tree‐Like Structures
Current Protocols in Bioinformatics, 2020Ggtree is an R/Bioconductor package for visualizing tree‐like structures and associated data. After 5 years of continual development, ggtree has been evolved as a package suite that contains treeio for tree data input and output, tidytree for tree data ...
Guangchuang Yu
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Minimal Mutation Trees of Sequences
SIAM Journal on Applied Mathematics, 1975Given a finite tree, some of whose vertices are identified with given finite sequences, we show how to construct sequences for all the remaining vertices simultaneously, so as to minimize the total edge-length of the tree. Edge-length is calculated by a metric whose biological significance is the mutational distance between two sequences.
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A Novel Neural Source Code Representation Based on Abstract Syntax Tree
International Conference on Software Engineering, 2019Exploiting machine learning techniques for analyzing programs has attracted much attention. One key problem is how to represent code fragments well for follow-up analysis.
Jian Zhang +5 more
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Phylogenetic Trees From Sequences
2010In this chapter, we review important concepts and approaches for phylogeny reconstruction from sequence data.We first cover some basic definitions and properties of phylogenetics, and briefly explain how scientists model sequence evolution and measure sequence divergence.
Paul Ryvkin, Li-San Wang
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Fault trees and sequence dependencies
Annual Proceedings on Reliability and Maintainability Symposium, 2002One of the frequency cited shortcomings of fault-tree models, their inability to model so-called sequence dependencies, is discussed. Several sources of such sequence dependencies are discussed, and new fault-tree gates to capture this behavior are defined.
J.B. Dugan, S.J. Bavuso, M.A. Boyd
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Sequences Characterizing k-Trees
2006A non-decreasing sequence of n integers is the degree sequence of a 1-tree (i.e., an ordinary tree) on n vertices if and only if there are least two 1’s in the sequence, and the sum of the elements is 2(n–1). We generalize this result in the following ways.
Lotker, Z. +3 more
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Encoding Trees by Linear Recurrence Sequences
Cybernetics and Systems Analysis, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Disjoint Representation of Tree Realizable Sequences
SIAM Journal on Applied Mathematics, 1974A necessary and sufficient condition is obtained for the edge disjoint tree realization of two degree sequences each of which is tree realizable. The condition is that the sum sequence be graphical.
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A Decision Tree Framework for Spatiotemporal Sequence Prediction
Knowledge Discovery and Data Mining, 2015We study the problem of learning to predict a spatiotemporal output sequence given an input sequence. In contrast to conventional sequence prediction problems such as part-of-speech tagging (where output sequences are selected using a relatively small ...
Taehwan Kim +3 more
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