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FORECASTING THE UNEMPLOYMENT RATE IN MALAYSIA DURING COVID-19 PANDEMIC USING ARIMA AND ARFIMA MODELS 利用arima和arfima模型预测2019冠状病毒病大流行期间马来西亚的失业率
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2022-02-28 DOI: 10.24191/mjoc.v7i1.14641
Nur Afiqah Ismail, Nurin Alya Ramzi, P. Mah
{"title":"FORECASTING THE UNEMPLOYMENT RATE IN MALAYSIA DURING COVID-19 PANDEMIC USING ARIMA AND ARFIMA MODELS","authors":"Nur Afiqah Ismail, Nurin Alya Ramzi, P. Mah","doi":"10.24191/mjoc.v7i1.14641","DOIUrl":"https://doi.org/10.24191/mjoc.v7i1.14641","url":null,"abstract":"The unemployment issue is one of the most common problems faced by many countries around the world. The unemployment rates in developed countries often fluctuate throughout time. Similarly, Malaysia is also affected by the inconsistent unemployment rate especially during the COVID-19 pandemic. Therefore, in order to understand the trend better, ARIMA and ARFIMA were used to model and forecast the unemployment rate in Malaysia in this study. The dataset on the unemployment rate in Malaysia from January 2010 until July 2021 was obtained from Bank Negara Malaysia (BNM) official portal. The best time series models found were ARIMA (2, 1, 2) and ARFIMA (0, −0.2339, 0). The performance of the models was evaluated using mean absolute percentage error (MAPE), mean absolute error (MAE) and root mean square error (RMSE). It appeared that the ARFIMA model emerged as a better forecast model since it had better performance compared to ARIMA in forecasting the unemployment rate in Malaysia.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"146 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114085123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
ON A COMPREHENSIVE CLASS OF ANALYTIC P-VALENT FUNCTIONS ASSOCIATED WITH SHELL-LIKE CURVE AND MODIFIED SIGMOID FUNCTION 类壳曲线与修正s型函数相关的一类解析p价函数
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2022-02-14 DOI: 10.24191/mjoc.v7i1.10494
J. O. Hamzat, A. Oladipo
{"title":"ON A COMPREHENSIVE CLASS OF ANALYTIC P-VALENT FUNCTIONS ASSOCIATED WITH SHELL-LIKE CURVE AND MODIFIED SIGMOID FUNCTION","authors":"J. O. Hamzat, A. Oladipo","doi":"10.24191/mjoc.v7i1.10494","DOIUrl":"https://doi.org/10.24191/mjoc.v7i1.10494","url":null,"abstract":"In this paper, the authors introduce and study a new class of analytic p-valent functions and its connections with some famous subclasses of analytic and univalent functions associated with shell-like curve and modified sigmoid function in the open unit disk E= {z : z |<1}. In particular, the coefficient condition for function f(z) belonging to the class Bp (λ, β) is investigated using a succinct mathematical approach. In addition, as a special case, convex functions of order 1/4 are shown to be in the aforementioned class Bp(λ, β) in E. With the aid of subordination principle, the authors obtain the first three Taylor-Maclaurin coefficients |ap+1 | , |ap+2 | and |ap+3 | as well as the Fekete-Szegö functional |ap+2 -ηa2p+1| for functions f(z) belonging to the class Bp(λ, β, σ;p ̃) involving modified sigmoid function and associated with shell-like curve.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134437677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
STABILITY AND BIFURCATION ANALYSIS OF COVID-19 MATHEMATICAL MODEL INCORPORATING CASE DETECTION 纳入病例检测的COVID-19数学模型的稳定性和分岔分析
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2022-02-14 DOI: 10.24191/mjoc.v7i1.13665
O. Odetunde, M. Ibrahim, O. T. Olotu, O. Uwaheren, S. T. Akinyemi
{"title":"STABILITY AND BIFURCATION ANALYSIS OF COVID-19 MATHEMATICAL MODEL INCORPORATING CASE DETECTION","authors":"O. Odetunde, M. Ibrahim, O. T. Olotu, O. Uwaheren, S. T. Akinyemi","doi":"10.24191/mjoc.v7i1.13665","DOIUrl":"https://doi.org/10.24191/mjoc.v7i1.13665","url":null,"abstract":"COVID-19 became a household name globally in the year 2020 after it was first discovered in Wuhan, China in December 2019. It is a global pandemic that shut the economy of all nations in the larger part of year 2020 by forcing a compulsory holiday on mankind due to its threat of mass death. The menace of this pandemic was combated with the total arsenal in human capacity. One of such weapons is case detection that leads to either self-isolation or quarantine. This weapon helps to reduce the number of new cases that may arise from undetected asymptomatic/symptomatic carriers within a population. In this article, the dynamics of COVID-19 transmission were studied by developing a mathematical model incorporating case detection, the impact of sensitization, and role of early diagnosis in curbing the spread of this disease. The basic properties in terms of existence, uniqueness, and boundedness of solution for the formulated model were discussed. Also, the model was found to exhibit two equilibrium states which are categorised as the disease-free (DFE) and pandemic equilibrium states. The reproductive number for the model was computed and used to establish the stability analysis for both equilibrium states. Center manifold theory was employed to assess the bifurcation analysis of the model and the result shows that the model exhibits forward bifurcation when the reproductive number is greater than and equal to 1.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127821074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IMPROVING THE EFFICIENCY OF UNIVERSITY LIBRARIES IN MALAYSIA USING ZERO-SUM GAINS DEA MODEL 利用零和收益dea模型提高马来西亚大学图书馆的效率
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2022-02-14 DOI: 10.24191/mjoc.v7i1.14860
Aqilah Nadirah Saliman, Noor Asiah Ramli, Mad Ithnin bin Salleh
{"title":"IMPROVING THE EFFICIENCY OF UNIVERSITY LIBRARIES IN MALAYSIA USING ZERO-SUM GAINS DEA MODEL","authors":"Aqilah Nadirah Saliman, Noor Asiah Ramli, Mad Ithnin bin Salleh","doi":"10.24191/mjoc.v7i1.14860","DOIUrl":"https://doi.org/10.24191/mjoc.v7i1.14860","url":null,"abstract":"Measuring the efficiency and optimizing available resources are vital for library management. This research empirically examines the measurement of efficiency of 10 public university libraries in Malaysia and provides an opportunity for inefficient libraries to improve their efficiency by proposing the appropriate number of resources. Data encompassing the number of staff, materials availability, and material circulation were gathered between 2016 and 2019. This study implements the zero-sum gains data envelopment analysis (ZSG-DEA) model to improve the efficiency. The findings show that in the early stage, five libraries were efficient in 2016 and 2018 while six libraries were efficient in 2017 and 2019. Comparable efficiency scores between conventional DEA and ZSG-DEA can be seen as all the inefficient libraries manage to attain better efficiency scores. Overall, all inefficient libraries can increase their efficiency rates. Despite the scores still not achieving the highest rate of efficiency, this study may assist librarians on managing library operations efficiently.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124671512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ASSESSMENT OF THE IMPACTS OF OIL PRICES ON NIGERIA ECONOMY USING COBB-DOUGLAS PRODUCTION FUNCTION 利用柯布-道格拉斯生产函数评价石油价格对尼日利亚经济的影响
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2022-02-07 DOI: 10.24191/mjoc.v7i1.11839
M. Garba, Aliu Omotayo Sikiru
{"title":"ASSESSMENT OF THE IMPACTS OF OIL PRICES ON NIGERIA ECONOMY USING COBB-DOUGLAS PRODUCTION FUNCTION","authors":"M. Garba, Aliu Omotayo Sikiru","doi":"10.24191/mjoc.v7i1.11839","DOIUrl":"https://doi.org/10.24191/mjoc.v7i1.11839","url":null,"abstract":"Fluctuations in oil prices have been a global issue over the years. Although many studies have been carried out the majority of those studies relating to oil prices focused more on its effects on oil-consuming nations than oil-producing ones. This study, however, examines the vulnerability of the economy of the oil-producing country to oil price changes using Nigeria being an OPEC member as a case study. The Cobb-Douglas production function was used to formulate the appropriate model that relates oil prices with the economy of Nigeria. However, the close to close (standard deviation) volatility method was used to measure the amount of variability in oil prices. Nevertheless, the perpetual inventory method was used to estimate the accumulated physical capital of Nigeria and the problems of multicollinearity inherent in the data were attenuated using ridge regression techniques as capital cannot be left out while dealing with production.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131893805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unified Functional Method for Solving General Polynomial Equations of Degree Less Than Five 求解一般小于五次多项式方程的统一泛函方法
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2021-09-30 DOI: 10.24191/mjoc.v6i2.11922
D. F. Nwosu, O. C. Okoli, Amaka Monica Ezeonyebuchi, A. T. Tiruneh
{"title":"Unified Functional Method for Solving General Polynomial Equations of Degree Less Than Five","authors":"D. F. Nwosu, O. C. Okoli, Amaka Monica Ezeonyebuchi, A. T. Tiruneh","doi":"10.24191/mjoc.v6i2.11922","DOIUrl":"https://doi.org/10.24191/mjoc.v6i2.11922","url":null,"abstract":"A unified method for solving that incorporate a computational formula that relate the coefficients of the depressed equation and the coefficients of the standard polynomial equation is proposed in this study. This is to ensure that this method is valid for all   It shall apply the undetermined parameter method of auxiliary function to obtain solutions to these polynomial equations of degree less than five in one variable.  In particular, the result of our work is a unification and improvement on the work of several authors in the sense that only applicable for the case of polynomial equation of degree one. Finally, our results improve and generalize the result by applying standard formula methods for solving higher degree polynomials. It is recommended that the effort should be made toward providing other variant methods that are simpler and friendly.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124899655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE STABILITY OF THE CRITICAL POINTS OF THE GENERALIZED GAUSE TYPE PREDATOR-PREY FISHERY MODELS WITH PROPORTIONAL HARVESTING AND TIME DELAY 具有比例收获和时滞的广义高斯型捕食-食饵渔业模型临界点的稳定性
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2021-09-21 DOI: 10.24191/mjoc.v6i2.9905
Wan Natasha Wan Hussin, R. Embong, Che Noorlia Noor
{"title":"THE STABILITY OF THE CRITICAL POINTS OF THE GENERALIZED GAUSE TYPE PREDATOR-PREY FISHERY MODELS WITH PROPORTIONAL HARVESTING AND TIME DELAY","authors":"Wan Natasha Wan Hussin, R. Embong, Che Noorlia Noor","doi":"10.24191/mjoc.v6i2.9905","DOIUrl":"https://doi.org/10.24191/mjoc.v6i2.9905","url":null,"abstract":"In the marine ecosystem, the time delay or lag may occur in the predator response function, which measures the rate of capture of prey by a predator. This is because, when the growth of the prey population is null at the time delay period, the predator’s growth is affected by its population and prey population densities only after the time delay period. Therefore, the generalized Gause type predator-prey fishery models with a selective proportional harvesting rate of fish and time lag in the Holling type II predator response function are proposed to simulate and solve the population dynamical problem. From the mathematical analysis of the models, a certain dimension of time delays in the predator response or reaction function can change originally stable non-trivial critical points to unstable ones. This is due to the existence of the Hopf bifurcation that measures the critical values of the time lag, which will affect the stabilities of the non-trivial critical points of the models. Therefore, the effects of increasing and decreasing the values of selective proportional harvesting rate terms of prey and predator on the stabilities of the non-trivial critical points of the fishery models were analysed. Results have shown that, by increasing the values of the total proportion of prey and predator harvesting denoted by qx Ex and qy Ey respectively, within the range 0.3102 ≤ qx Ex ≤ 0.9984 and 0.5049 ≤ qy Ey ≤ 0.5363, the originally unstable non-trivial critical points of the fishery models can be stable.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128195825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
STABILITY ANALYSIS OF A PROPOSED SCHEME OF ORDER FIVE FOR FIRST ORDER ORDINARY DIFFERENTIAL EQUATIONS 一阶常微分方程五阶格式的稳定性分析
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2021-09-21 DOI: 10.24191/mjoc.v6i2.9756
S. E. Fadugba, R. Ogunrinde, R. R. Ogunrinde
{"title":"STABILITY ANALYSIS OF A PROPOSED SCHEME OF ORDER FIVE FOR FIRST ORDER ORDINARY DIFFERENTIAL EQUATIONS","authors":"S. E. Fadugba, R. Ogunrinde, R. R. Ogunrinde","doi":"10.24191/mjoc.v6i2.9756","DOIUrl":"https://doi.org/10.24191/mjoc.v6i2.9756","url":null,"abstract":"This paper presents the stability analysis of a proposed scheme of order five (FCM) for first order Ordinary Differential Equations (ODEs). The proposed FCM is derived by means of an interpolating function of polynomial and exponential forms. The properties of FCM were discussed extensively. The linear stability of FCM in the context of the Third Order One-Step Method (TCM) and Second Order One-Step Method (SCM) for the solution of initial value problems of first order differential equations is presented. The stability region of FCM, TCM and SCM is investigated using the Dahlquist’s test equation. The numerical results obtained via FCM are compared with TCM and SCM. Moreover, by varying the step length, the accuracy and convergence of the methods in terms of the final absolute relative error are measured. The results show that FCM converges faster and more stable than its counterparts.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134482092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PROJECT-BASED INCIDENT RATE BASED ON WEIGHTED AVERAGE METHOD 基于加权平均方法的基于项目的事故率
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2021-09-21 DOI: 10.24191/mjoc.v6i2.13145
K. Rasmani, N. Yusof, N. Amit, N. M. Lip, H. Ramli, Nuraina Nadiah Rosli, Anis Dayana Rusli
{"title":"PROJECT-BASED INCIDENT RATE BASED ON WEIGHTED AVERAGE METHOD","authors":"K. Rasmani, N. Yusof, N. Amit, N. M. Lip, H. Ramli, Nuraina Nadiah Rosli, Anis Dayana Rusli","doi":"10.24191/mjoc.v6i2.13145","DOIUrl":"https://doi.org/10.24191/mjoc.v6i2.13145","url":null,"abstract":"The incident rate has been widely used to indicate safety performance. The incident rate of a company can be compared with the national or international incident rate within similar  industry or among different type of industries. The comparison is particularly very useful as a safety benchmark to gauge performance with other companies in the same business area. However, many existing methods produce the annual incident rate, which has been formulated on an annual basis. This will lead to incompatibility of the method used in calculating the incident rate for a project that runs for a specific period. This is because the annual incident rate does not consider the duration of the project; it  becomes less meaningful in indicating the safety performance of project-based activities such as those in construction industries. The proposed method which is Project-Based Incident Rate (PIR) is found to be able to reflect the actual situation of project-based companies better than the existing annual incident rate method, and it is also can be expressed both on a monthly and yearly basis.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"14 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133613359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Machine Learning Techniques for Heart Failure Prediction 心力衰竭预测的机器学习技术
MALAYSIAN JOURNAL OF COMPUTING Pub Date : 2021-08-10 DOI: 10.24191/mjoc.v6i2.13708
Nur Shahellin Mansur Huang, Z. Ibrahim, N. Diah
{"title":"Machine Learning Techniques for Heart Failure Prediction","authors":"Nur Shahellin Mansur Huang, Z. Ibrahim, N. Diah","doi":"10.24191/mjoc.v6i2.13708","DOIUrl":"https://doi.org/10.24191/mjoc.v6i2.13708","url":null,"abstract":"This paper discusses the performance of four popular machine learning techniques for predicting heart failure using a publicly available dataset from kaggle.com, which are Random Forest (RF), Support Vector Machine (SVM), Naive Bayes (NB), and Logistic Regression (LR).  They were selected due to their good performance in medical-related applications.  Heart failure is a common public health problem, and there is a need to improve the management of heart failure cases to increase the survival rate.  The vast amount of medical data related to heart failure and the availability of powerful computing devices allow researchers to conduct more experiments. The performance of the machine learning techniques was measured by accuracy, precision, recall, f1-score, sensitivity, and specificity in predicting heart failure with 13 symptoms or features. Experimental analysis showed that RF produces the highest performance score, which is 0.88 compared to SVM, NB, and LR.  Further experiments with RF were also conducted to determine the important features in predicting heart failure, and the results indicated that all 13 symptoms or features are important.","PeriodicalId":129482,"journal":{"name":"MALAYSIAN JOURNAL OF COMPUTING","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130263633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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