Feed Selection Decision Support System The Best Cat uses the Analytical Hierarchy Process Method

With the development of technology and increasingly rapid competition in the business world, just opening a Cat Shop is not enough. To win the competition, technology and research are used to overcome the problem of consumers who are confused about choosing the type of food for their cats, because there are many types of cats and cat food available. circulating in the market today.. Cat Shop is a business that provides various kinds of pet needs, such as pet food, animal equipment and animal accessories. The Cat Shop sells various products to the public. Cat Shop currently has a share of the pet market in big cities in Indonesia. This decision support system research uses the Analytical Hierarchy Process (AHP) method. The AHP method is a method that is widely used in the case of weighting criteria and prioritizing each criterion. After this research was applied, the results were able to answer the information needs regarding the selection of the best cat food, it has been able to answer and assist in solving the problem of choosing the best cat food purchase.


Introduction
Cat Shop is a business that provides various kinds of pet needs, such as pet food, animal equipment and animal accessories. The Cat Shop sells a variety of products to people who have pets, especially cats. Cat Shop currently also has a share of the pet market in big cities in Indonesia. It can be seen that there are many Cat Shops circulating in big cities and small towns to meet consumer needs for their pets.
Based on data released by Euromonitor in 2021, the cat population in Indonesia has increased from 2017 to 2021 by 129 percent. Because of this, the market for the cat market category also increased by 108 percent compared to 2017. This increase is accompanied by an increase in awareness of the cleanliness of cat pets. With the increasing number of cat pets in Indonesia, it will also have an impact on increasing providers of services and products for cat pets.
This can be seen from the growing business of the Cat Shop and pet clinics, especially cats. Pet products such as pet food are products that are best selling to people who have pets. However, pet food that is sold for pets has many types and comes from many manufacturers where each manufacturer claims that their product is the best product compared to other products , and that also creates confusion for consumers who come to shop at the Cat Shop.
With the development of technology and increasingly rapid competition in the business world, just opening a Cat Shop is not enough. To win the competition, technology and research are used to overcome the problem of consumers who are confused about choosing the type of food for their cats, because there are many types of cats and cat food available. currently on the market. A decision support system (DSS) is a way of organizing information (involving the use of databases) intended for use in making decisions [1]. SPK is designed to be an approach to solving the problems of decision makers and application needs, but not to replace decisions or make decisions for users [2]. The act of choosing a strategy or action that the manager believes will provide the best solution for something is called decision making. The purpose of the decision is to achieve certain targets or actions that must be taken [ 3].
The concept of decision support is characterized by interactive computer-based systems that help decision makers utilize data and models to solve unstructured problems [ 4]. Basically DSS is designed to support all stages of decision making starting from identifying problems, selecting relevant data, determining the approach used in the decision making process, to evaluating alternative choices [ 5].
Decision support systems are not intended to automate decision making, but provide interactive tools that enable decision makers to carry out various analyzes using available models . [ 6] To solve this problem, the AHP method is used. The Analytical Hierarchy Process (AHP) method is a method that is widely used in the case of weighting criteria and prioritizing each criterion. The reason for

Dinda Putri Insani
Journal of Computer Science and Information Technology Volume. 9 Issue 2 (2023) 61-65 2 using AHP is in the eigenvector concept which is used to carry out the priority ranking process for each criterion based on a pairwise comparison matrix [ 7].
AHP is a decision support model developed by Thomas L. Saaty. AHP is a method for making alternative sequences that aim to choose the best when making decisions. In AHP sometimes a decision problem arises that is felt and observed needs to be taken as soon as possible but the variations are so complicated that it is impossible to record the data numerically [8].
Previous research on decision support systems regarding employee performance appraisal using the AHP method had the aim of knowing the achievements that can be achieved by each employee. So that it is hoped that it can assist decision makers in obtaining information to determine employee performance achievements that are more objective [ 9].
As for previous research, it has been widely used in various fields by applying the AHP method, such as decision support systems for selecting new employees [ 10], SPK refunding savings funds [11], selecting free design vendors [12], scholarship recipients [13], selecting typical Sampit snacks [ 14], determining the best teacher [15] and many other studies.

Research methodology
To assist in the preparation of this research, it is necessary to have a framework with clear stages. This framework is the steps that will be taken in solving the problems that will be discussed. The research framework used is shown in Figure 1: Research stages are stages that will be carried out to make it easier to do research. The stages in this research are as follows:

Preliminary Research
From a research, first is to analyze the object to be processed. With preliminary research, it can provide initial evidence that the problems we will examine in the field really exist. Therefore, time is needed for data collection, research time, research locations, research methods, field research, library research, and laboratory research.

Data collection
In collecting data, the authors obtain data from various sources, such as this research, obtained from articles, obtained from other references, and the authors conducted interviews directly with the Owner as the shop owner at Jesyy Cat Shop. The author records some important information related to the research being carried out.

System analysis
System analysis is the initial stage in designing and developing a system that will be designed, because at this stage the performance of the system being designed will be measured and evaluated. In conducting system analysis, you must first know and understand the system, to analyze the system, you need data from the system to be analyzed. Required data are things that are needed for the definition of data. So that from the data that has been defined, identification of existing problems can be carried out and the necessary design steps can be made so that the design results are as expected.

Design
At this stage , a system design will be created that will be carried out, the researcher uses UML (Unified Modeling Language) as a tool in explaining the flow of program analysis. Only a few UML diagrams are used, namely Use Case Diagrams, Activity Diagrams, Class Diagrams, Sequence Diagrams.

Implementation
Implementation is the stage of laying the system so that it is ready to operate. Applications to be designed, implemented using the PHP programming language and MySQL database as a decision making tool.

Testing and Evaluation
System testing is the stage that will be carried out on the resulting system to find out whether the decision support system that has been designed can run correctly and in accordance with the design carried out in selecting the best cat food.

Analytical Hierarchy Process (AHP) method
Calculation of the Analytical Hierarchy Process (AHP) in the decision support system for determining the best food for Visitors at Jessy Cat Shop uses 4 criteria factors, namely Type, Price, Protein, Weight. The Analytical Hierarchy Process (AHP) method also calculates 4 intensities, namely very good, good, sufficient, less and less good. From the 4 criteria and 4 intensity factors for each of these criteria, the best cat food was selected for visitors at Jessy Cat Shop using the Analytical Hierarchy Process (AHP) model so that the total value for each food was obtained. The criteria, assessment criteria and food list in the selection of the best food purchases for Jessy Cat Shop are as follows:  In this study using 5 lists of cat food to be tested. As for the assessment of criteria and alternatives, it is assessed through pairwise comparisons using the specified Saaty comparison scale used to fill in the value of the comparison matrix. Rating scale and pairwise comparisons can be seen in Table  4 below:

Determine Priority Criteria
The steps that must be taken in determining priority criteria are as follows: Step 1: Create a pairwise comparison matrix between one criterion and another, as can be seen in Table 5  Step 2 : Perform normalization. You do this by dividing each element by the number of each column as shown in Table 6 below. The total priority value is used to get the weight of the criteria as shown in Table 7 so that it becomes: Step 4 : Create a sum matrix for each row. Each element in this table is calculated by multiplying the pairwise comparison matrix by the priority or average value. The row sum matrix can be seen in table 8 below : The following is the calculation process to get the Addition Matrix Value for each row by normalizing: Step 5 : Calculation of the consistency ratio. Used to ensure that the consistency ratio (CR) ≤ 0 ,1 . If the CR value > 0.1 then the pairwise comparison matrix must be recalculated. x

Determine Priority Criteria
The steps in determining priority criteria from all criteria are as follows: 1. Make Pairwise Comparisons of types

Conclusion
Based on the results of the research that has been done, it can be concluded that this system has answered the information needs regarding the selection of the best cat food, has been able to answer and assist in solving the problem of choosing the best cat food purchase. After the existence of this decision support system, the business promotion areas have spread within and outside the region and have covered other cities within reach.