| 2020 | IGARSS | Solar Activity is One of Triggers of Earthquakes with Magnitudes Less Than 6. | Ryuei Nishii, Pan Qin, Ryosuke Kikuyama |
| 2020 | IGARSS | Two Stage Estimation Procedure of Non-Linear Regression Functions for Spatially-Dependent Data. | Ryuei Nishii, Shojiro Tanaka |
| 2019 | IGARSS | Two Stage Estimation Procedure for Spatial Regression Models and Model Selection. | Shojiro Tanaka, Ryuei Nishii, Gigih Fitrianto |
| 2015 | CEC | Analytical estimation of the convergence point of populations. | Noboru Murata, Ryuei Nishii, Hideyuki Takagi, Yan Pei |
| 2015 | IGARSS | Unified modeling based on SVM and SVR for prediction of forest area ratio by human population density and relief energy. | Ryuei Nishii, Shojiro Tanaka |
| 2015 | IGARSS | Incorporation of gridded data into the analysis of remotely-sensed images: Basic quantitative strategy to analyze defoerestation by population growth. | Shojiro Tanaka, Ryuei Nishii |
| 2014 | IGARSS | Contextual unmixing of geospatial data based on Bayesian modeling. | Ryuei Nishii, Pan Qin, Daisuke Uchi |
| 2014 | IGARSS | Re-evaluation of topographic attributes with human population in deforestation framework with spatial dependency. | Shojiro Tanaka, Ryuei Nishii |
| 2013 | IGARSS | Nonlinear Bayesian unmixing of geospatial data based on GIBBS sampling. | Ryuei Nishii, Pan Qin, Daisuke Uchi |
| 2013 | IGARSS | Effect evaluation of topographic attributes on forest coverage ratios based on digital elevation model. | Shojiro Tanaka, Ryuei Nishii |
| 2010 | IGARSS | An application of novel zero-one inflated distributions with spatial dependence for the deforestation modeling. | Ryuei Nishii, Shojiro Tanaka |
| 2009 | IGARSS | Semi-supervised Contextual Classification and Unmixing of Hyperspectral Data based on Mixture Distributions. | Ryuei Nishii, Tomohiko Ozaki, Yoko Sawamura |
| 2008 | IGARSS | Contextual Unmixing of Geospatial Data based on Gaussian Mixture Models and Markov Random Fields. | Ryuei Nishii, Yoko Sawamura, Akiko Nakamoto, Shuji Kawaguchi |
| 2008 | IGARSS | Non-linear regression models to identify functional forms of deforestation. | Shojiro Tanaka, Ryuei Nishii |
| 2007 | IGARSS | Deforestation due to population and relief energy through spatially-correlated logit models. | Shojiro Tanaka, Ryuei Nishii |
| 2007 | IGARSS | Hyperspectral image classification by recursive spatial boosting based on the bootstrap method. | Shuji Kawaguchi, Ryuei Nishii |
| 2006 | IGARSS | Contextual Image Classification Based on Spatial Boosting. | Ryuei Nishii |
| 2006 | IGARSS | Hyperspectral Image Classification by AdaBoost with Decision Stumps Based on Composed Feature Variables. | Shuji Kawaguchi, Ryuei Nishii |
| 2005 | IGARSS | Spatio-temporal contextual image classification based on Spatial AdaBoost. | Ryuei Nishii, Shinto Eguchi |
| 2004 | ICFHR | A new series of rotation invariant moments by Lie transformation group theory. | Toshio Sakata, Ryuei Nishii, Tan Siang Chin, Ryuichi Sawae |
| 2004 | IGARSS | Supervised image classification based on adaboost with contextual weak classifiers. | Ryuei Nishii, Shinto Eguchi |
| 2003 | IGARSS | Contextual image segmentation based on AdaBoost and Markov random fields. | Ryuei Nishii |
| 2002 | IGARSS | Fusion of contextual classification and the existing classification result. | Ryuei Nishii |