Background & Objective:  The present study aimed at exploring the structure of global knowledge, hidden patterns, and emerging Coronavirus events using co-word techniques. Co-word analysis is one of the most efficient scientific methods to analyze the structure and dynamics of knowledge and the general state of research.  Materials & Methods:  This applied research performed using Co-word anal...

Background and Objective: Influenza is a global epidemic disease that always causes irreparable damage to individuals and countrieschr('39') health, and the amount of research in this area is increasing. The primary purpose this study is to discover the hidden patterns and emerging events of global influenza publications. Materials and Methods: This article is an applied type was done with an ...

自然言語処理では個々の問題を分類問題として定式化し,帰納学習の手法を利用して,その問題を解決す るというアプローチが大きな成功をおさめている.しかしこのアプローチには帰納学習で必要とされる訓 練データを用意しなければならないという大きな問題がある.この問題に対して,近年,少量のラベル付き 訓練データから得られる分類規則の精度を,大量のラベルなし訓練データによって高めてゆく seed 型の学 習が散見される.ここではその中心的な手法である Co-training を語義判別規則に適用することを試みる. ただし Co-training では独立な 2組の素性集合を設定する必要がある.現実的にはこの独立性の条件が厳し いため,得られる規則の精度が頭打ちになってゆく.本論文ではこの問題を回避するために,追加事例の選 択に素性間の共起性を考慮することで Co-training の手法を改良する...

IN THE LAST HALF CENTURY, AS THE SCIENCE I,ITERATURE has increased dramatically, scientists found it increasingly difficult to locate needed data, and it is increasingly difficult for policymakers to understand the complex interrelationship of science in order to achieve effective research planning. Some quantitative techniques have been developed to ameliorate these problems; co-word analysis ...

This report initially describes the motivations for co-word analysis in support of research policy formulation and research implementation evaluation. It places coword analysis in perspective to other co-occurrence techniques such as cocitation and co-nomination analyses. It then traces the origins of co-word analysis in computational linguistics, describes in detail the development of co-word ...