Network information mining is the study of the network topology,which may answer a large number of applicationbased questions towards the structural evolution and the function of a real system.The question can be rela...Network information mining is the study of the network topology,which may answer a large number of applicationbased questions towards the structural evolution and the function of a real system.The question can be related to how the real system evolves or how individuals interact with each other in social networks.Although the evolution of the real system may seem to be found regularly,capturing patterns on the whole process of evolution is not trivial.Link prediction is one of the most important technologies in network information mining,which can help us understand the evolution mechanism of real-life network.Link prediction aims to uncover missing links or quantify the likelihood of the emergence of nonexistent links from known network structures.Currently,widely existing methods of link prediction almost focus on short-path networks that usually have a myriad of close triangular structures.However,these algorithms on highly sparse or longpath networks have poor performance.Here,we propose a new index that is associated with the principles of structural equivalence and shortest path length(SESPL)to estimate the likelihood of link existence in long-path networks.Through a test of 548 real networks,we find that SESPL is more effective and efficient than other similarity-based predictors in long-path networks.Meanwhile,we also exploit the performance of SESPL predictor and of embedding-based approaches via machine learning techniques.The results show that the performance of SESPL can achieve a gain of 44.09%over GraphWave and 7.93%over Node2vec.Finally,according to the matrix of maximal information coefficient(MIC)between all the similarity-based predictors,SESPL is a new independent feature in the space of traditional similarity features.展开更多
A group of paleontologists from China, the United States and Canada have made new progress in tracking down the process of the evolution of smallsized dinosaurs and the origin of birds through intensive analysis of th...A group of paleontologists from China, the United States and Canada have made new progress in tracking down the process of the evolution of smallsized dinosaurs and the origin of birds through intensive analysis of the fossils of a newly found dinosaur,Sinovenator, a close relative of birds. In a letter published in the Feb.14 issue of Nature, dinosaur expert Dr. Xu Xing at CAS Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) and his coworkers reveal some interesting phenomena in the process of the evolution of dinosaurs towards birds.展开更多
The balkanization of reality by Aristotelian Philosophy has been a thought provoking exercise in the history of Western Philosophy.Aristotle's idea as conceptualized by Asouzu as Philosophy of Essence has been the...The balkanization of reality by Aristotelian Philosophy has been a thought provoking exercise in the history of Western Philosophy.Aristotle's idea as conceptualized by Asouzu as Philosophy of Essence has been the central instrument for bifurcation and polarization of all entities into classes,such as:Essence and Accident,Matter and Form,Cause and Effect,Rationalism and Empiricism etc.This dualistic ontology be believes has eaten deeply into the mind of Western scholars to perceive science dualistically.In view of the above,the disagreement with Aristotle's compartmentalization of reality from Ibuanyidanda Philosophy(Philosophy of Complementarity)by Asouzu is an attempt to restructure scientific dualistic ontology into one unified,non-polarized,non-absolutistic,harmonious framework capable of fascinating unity in science.Hence,the subject matter of Ibuanyidanda Philosophy is to restore the broken unity between theory and praxis that exists in science because everything that exists serves a missing link of reality.The aim of this paper is to critically examine from the philosophical eye,the various critique by Asouzu on this thought provoking polarization of reality in Aristotle's Philosophy of Essence.We are of the view that Aristotle had to balkanize reality to solve the various problems of his era.Thus,if applied to contemporary scientific issues,it will lead us to no unity and growth in science.Furthermore,from Ibuanyidanda's perspective,we are of the view that its nature of harmonious non-polarized ontology is a breakthrough to contemporary scientific issues especially the debate within macro physics,theory of relativity,and sub-atomic particles physics(Quantum Mechanics).展开更多
The generalized linear model is an indispensable tool for analyzing non-Gaussian response data, with both canonical and non-canonical link functions comprehensively used. When missing values are present, many existing...The generalized linear model is an indispensable tool for analyzing non-Gaussian response data, with both canonical and non-canonical link functions comprehensively used. When missing values are present, many existing methods in the literature heavily depend on an unverifiable assumption of the missing data mechanism, and they fail when the assumption is violated. This paper proposes a missing data mechanism that is as generally applicable as possible, which includes both ignorable and nonignorable missing data cases, as well as both scenarios of missing values in response and covariate.Under this general missing data mechanism, the authors adopt an approximate conditional likelihood method to estimate unknown parameters. The authors rigorously establish the regularity conditions under which the unknown parameters are identifiable under the approximate conditional likelihood approach. For parameters that are identifiable, the authors prove the asymptotic normality of the estimators obtained by maximizing the approximate conditional likelihood. Some simulation studies are conducted to evaluate finite sample performance of the proposed estimators as well as estimators from some existing methods. Finally, the authors present a biomarker analysis in prostate cancer study to illustrate the proposed method.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.61773091 and 62173065)the Industry-University-Research Innovation Fund for Chinese Universities(Grant No.2021ALA03016)+2 种基金the Fund for University Innovation Research Group of Chongqing(Grant No.CXQT21005)the National Social Science Foundation of China(Grant No.20CTQ029)the Fundamental Research Funds for the Central Universities(Grant No.SWU119062).
文摘Network information mining is the study of the network topology,which may answer a large number of applicationbased questions towards the structural evolution and the function of a real system.The question can be related to how the real system evolves or how individuals interact with each other in social networks.Although the evolution of the real system may seem to be found regularly,capturing patterns on the whole process of evolution is not trivial.Link prediction is one of the most important technologies in network information mining,which can help us understand the evolution mechanism of real-life network.Link prediction aims to uncover missing links or quantify the likelihood of the emergence of nonexistent links from known network structures.Currently,widely existing methods of link prediction almost focus on short-path networks that usually have a myriad of close triangular structures.However,these algorithms on highly sparse or longpath networks have poor performance.Here,we propose a new index that is associated with the principles of structural equivalence and shortest path length(SESPL)to estimate the likelihood of link existence in long-path networks.Through a test of 548 real networks,we find that SESPL is more effective and efficient than other similarity-based predictors in long-path networks.Meanwhile,we also exploit the performance of SESPL predictor and of embedding-based approaches via machine learning techniques.The results show that the performance of SESPL can achieve a gain of 44.09%over GraphWave and 7.93%over Node2vec.Finally,according to the matrix of maximal information coefficient(MIC)between all the similarity-based predictors,SESPL is a new independent feature in the space of traditional similarity features.
文摘A group of paleontologists from China, the United States and Canada have made new progress in tracking down the process of the evolution of smallsized dinosaurs and the origin of birds through intensive analysis of the fossils of a newly found dinosaur,Sinovenator, a close relative of birds. In a letter published in the Feb.14 issue of Nature, dinosaur expert Dr. Xu Xing at CAS Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) and his coworkers reveal some interesting phenomena in the process of the evolution of dinosaurs towards birds.
文摘The balkanization of reality by Aristotelian Philosophy has been a thought provoking exercise in the history of Western Philosophy.Aristotle's idea as conceptualized by Asouzu as Philosophy of Essence has been the central instrument for bifurcation and polarization of all entities into classes,such as:Essence and Accident,Matter and Form,Cause and Effect,Rationalism and Empiricism etc.This dualistic ontology be believes has eaten deeply into the mind of Western scholars to perceive science dualistically.In view of the above,the disagreement with Aristotle's compartmentalization of reality from Ibuanyidanda Philosophy(Philosophy of Complementarity)by Asouzu is an attempt to restructure scientific dualistic ontology into one unified,non-polarized,non-absolutistic,harmonious framework capable of fascinating unity in science.Hence,the subject matter of Ibuanyidanda Philosophy is to restore the broken unity between theory and praxis that exists in science because everything that exists serves a missing link of reality.The aim of this paper is to critically examine from the philosophical eye,the various critique by Asouzu on this thought provoking polarization of reality in Aristotle's Philosophy of Essence.We are of the view that Aristotle had to balkanize reality to solve the various problems of his era.Thus,if applied to contemporary scientific issues,it will lead us to no unity and growth in science.Furthermore,from Ibuanyidanda's perspective,we are of the view that its nature of harmonious non-polarized ontology is a breakthrough to contemporary scientific issues especially the debate within macro physics,theory of relativity,and sub-atomic particles physics(Quantum Mechanics).
基金supported by the Chinese 111 Project B14019the US National Science Foundation under Grant Nos.DMS-1305474 and DMS-1612873the US National Institutes of Health Award UL1TR001412
文摘The generalized linear model is an indispensable tool for analyzing non-Gaussian response data, with both canonical and non-canonical link functions comprehensively used. When missing values are present, many existing methods in the literature heavily depend on an unverifiable assumption of the missing data mechanism, and they fail when the assumption is violated. This paper proposes a missing data mechanism that is as generally applicable as possible, which includes both ignorable and nonignorable missing data cases, as well as both scenarios of missing values in response and covariate.Under this general missing data mechanism, the authors adopt an approximate conditional likelihood method to estimate unknown parameters. The authors rigorously establish the regularity conditions under which the unknown parameters are identifiable under the approximate conditional likelihood approach. For parameters that are identifiable, the authors prove the asymptotic normality of the estimators obtained by maximizing the approximate conditional likelihood. Some simulation studies are conducted to evaluate finite sample performance of the proposed estimators as well as estimators from some existing methods. Finally, the authors present a biomarker analysis in prostate cancer study to illustrate the proposed method.
