Bahrul Ilmi Nasution

The University of Manchester · Department of Social Statistics

Implement and enhance the performance of spatial fuzzy clustering using Fuzzy Geo- graphically Weighted Clustering with various optimization algo- rithms, mainly from Xin She Yang (2014) with book entitled Nature- Inspired Optimization Algorithms. The optimization algorithm is useful to tackle the disadvan- tages of clustering inconsistency when us...

COVID-19 has a severe and widespread impact, especially in Indonesia. COVID-19 was first reported in Indonesia on March 03, 2020 then rapidly spread to all 34 provinces by April 09, 2020. Since then, COVID-19 is declared a state of national disaster and health emergency. This research analyzes the difference of CO, HCHO, NO2, and SO2 density in Jak...

In previous social vulnerability studies, the use of indices in assessing social vulnerability can only describe conditions of social vulnerability in general without being able to indicate which factors are dominant in measuring the level of social vulnerability. Therefore this study aims to fill the gap by implementing the relative approach using...

Poverty is always associated with poor green infrastructure. Indonesia has a significant poverty rate and low green infrastructure investment. Therefore, this study uses fuzzy clustering with area weighting (FGWC-HHOP) and 2018 Potential Village Census (PODES) data to analyze green infrastructure risk and poverty in Indonesia. The first cluster, wh...

Purpose The purpose of this paper is to manage knowledge pertaining to micro, small and medium enterprise (MSME) actors in the business, agriculture and industry sectors. This study uses text mining techniques, specifically Latent Dirichlet Allocation Mallet, to analyze the data obtained from the in-depth interviews. This analysis helps us identify...

SARS-Cov-2 spreads quickly and continues to do so to this day. One way to limit the spread is by limiting people's mobility through transportation. The Provincial Government of Jakarta has implemented the Large-Scale Social Restriction Transitional Phase-1 since June 5th, 2020, to limit people mobility and the odd-even policies August 3rd, 2020, to...

Jakarta, known as the capital city of Indonesia and the national economic activity center, is also known as the market for floods. Moreover, the regions of Jakarta become vulnerable, especially the slum areas and this COVID-19 pandemic. This study proposes implementing Fuzzy Geographically Weighted Clustering (FGWC) with Chaotic Flower Pollination...

Along with the growing popularity of the small area estimation method, the need to utilize good auxiliary variables also increases. Remote sensing data, such as night light imagery, offers advantages such as time-cost efficiency and global coverage but is easily accessible. This research aims to implement night light intensity as an auxiliary varia...

As an area experiencing air pollution, especially ozone concentrations that often exceed the threshold or are unhealthy, JABODETABEK (Jakarta, Bogor, Depok, Tangerang, and Bekasi) seeks to prevent and control pollution as well as restore air quality. Therefore, this study aims to build a predictive model of ozone concentration using Harris hawks op...

At the end of 2021 Q2, coronavirus disease 2019 (COVID-19) in Indonesia experienced a continuous increase in positivity and mortality rates. There are limited studies regarding the factors of COVID-19 mortality in Indonesia with a more balanced dataset. The previous studies only implemented logistic regression, sensitive to the imbalanced dataset....

This paper presents the dataset about the social vulnerability in Indonesia. This dataset contains several dimensions which rely on previous studies. The data was compiled mainly from the 2017 National Socioeconomic Survey (SUSENAS) done by BPS-Statistics Indonesia. We utilize the weight to obtain the estimation based on multistage sampling. We als...

Coronavirus disease 2019 (COVID-19) has been a global disaster, with over 746,312 confirmed cases and still counting in Indonesia, especially Jakarta, which has about 50 per cent asymptomatic confirmed cases. This paper aims to investigate the persistent factors of COVID-19 diagnosis using four scenarios of asymptomatic inclusion. We use Bayesian L...

The COVID-19 pandemic has caused effects in many sectors, including in businesses and enterprises. The most vulnerable businesses to COVID-19 are micro, small, and medium enterprises (MSMEs). Therefore, this paper aims to analyze the business vulnerability of MSMEs in Indonesia using the fuzzy spatial clustering approach. The fuzzy spatial clusteri...