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Prediksi Lokasi Tindak Pidana Pencurian Menggunakan Metode K-Nearest Neighbor di Wilayah Hukum Polres Badung Polda Bali Bayuna, Kadek Ari; Prianggono, Jarot; Wibowo, Didit Bambang
Jurnal Portofolio : Jurnal Manajemen dan Bisnis Vol. 4 No. 1 (2025): Prediksi dan Pemanfaatan Big Data Dalam Manajemen Cyber Digital Dunia Peradaban
Publisher : Prisani Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70704/jpjmb.v4i1.352

Abstract

This study aims to predict the location of theft crimes in the jurisdiction of the Badung Police by applying the K-Nearest Neighbor (KNN) method. The main focus of the study is to identify crime patterns based on time and location variables in order to improve the effectiveness of police prevention strategies. The problem raised is how machine learning-based models can help detect theft-prone areas and improve accuracy in crime prevention efforts. This study uses a quantitative approach with the CRISP-DM (Cross-Industry Standard Process for Data Mining) method. The data used includes information on time, location of the incident, and theft categories based on police reports. The research process includes business understanding, data exploration and preparation, modeling using KNN, model performance evaluation, and implementation in the form of interactive map visualization. Model performance is analyzed using evaluation metrics such as precision, recall, and F1-score to measure the level of prediction accuracy. The results of the study show that the KNN model is able to identify locations with a high risk of theft with fairly good accuracy. Areas with high activity, such as transportation facilities and commercial areas, are more vulnerable to this crime. In addition, thefts occur more often in the morning, evening, and early morning when people are off guard. In conclusion, the KNN method is effective in predicting theft-prone areas. Implementation of this model can help the police improve the effectiveness of patrols and security strategies. It is recommended that this model be combined with a geographic information system (GIS) to facilitate the analysis of crime patterns in order to improve public security more proactively.
Analisis Prediksi Tindak Pidana Pencurian Dengan Metode Klasifikasi Algoritma K-Nearest Neighbor di Polresta Bengkulu, Polda Bengkulu Kusuma, Firman Bagus Perdana; Wibowo, Didit Bambang; Prianggono, Jarot
Jurnal Portofolio : Jurnal Manajemen dan Bisnis Vol. 4 No. 1 (2025): Prediksi dan Pemanfaatan Big Data Dalam Manajemen Cyber Digital Dunia Peradaban
Publisher : Prisani Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70704/jpjmb.v4i1.354

Abstract

This research is driven by the phenomenon of high crime rates, especially theft. A method is needed that can assist the police in planning and implementing a more optimal and targeted patrol strategy. Data mining can be applied to crime data, especially theft crime data, to obtain information that can be used as a basis for decision making in carrying out patrols by the Police. Machine learning algorithms can be used to classify types of theft crimes based on characteristics and predict the possibility of future theft crimes based on influencing factors. Data mining is a logical process to find information that is very useful as a supporting tool in decision making. K-Nearest Neighbor (KNN) is a classification method and uses the CRISP-DM (Cross Industry Standard Process for Data Mining) framework in pulling information from a collection of datasets. This study uses a population in the form of Police Reports (LP) of Theft Victims that occurred in the Bengkulu Police Resort which occurred from 2020 to 2025. The K-Nearest Neighbor (KNN) model shows a fairly high level of reliability in predicting the time of theft, the age of the victim, and the type of item stolen at Bengkulu Police Resort. The KNN model was able to predict the time of incidents, victim age, and type of stolen items with high accuracy — 87.35%, 82.41%, and 88.43% respectively. Based on the results of this study, the application of machine learning in predictive policing can be implemented more effectively than conventional patrol methods. Therefore, the KNN prediction model developed in this study is recommended to be applied in the police patrol system, especially at Bengkulu Police Resort, to improve the effectiveness of surveillance and crime prevention in the jurisdiction of Bengkulu City.