Linear and Non-linear Quantitative Structure – Activity Relationship Models on Indole Substitution Patterns as Inhibitors of HIV-1 Attachment

This work is a quantitative structure-activity relationship (QSAR) model of the biological activity of oxadiamine derivatives as inhibitors of the interaction between human immunodeficiency virus (HIV) glycoprotein gp 120 and host cell CD4 receptor It was done to develop. In this study, 40 different compounds were chosen as sample groups. Next, the QSAR model is built using a combination of multiple linear regression analysis (MLR), genetic algorithm (GA), and artificial neural network (ANN).

Linear Data Structures and Nonlinear Data Structures: Linear data structures maintain a linear relationship between their elements, those elements form a sequence, each element in the structure has its own precedence and successor. Array examples Nonlinear data structures do not maintain hierarchical relationships between elements. The sample tree stack can take any abstract data type as an element, but it can only be characterized by two basic operations: push and pop. A push operation is added to the top of the list to hide the items already in the stack, or initialize the stack if the stack is empty. Pop operation deletes an item from the top of the list and returns the value to the caller. A popup window that displays previously hidden items or displays an empty list

One feature of linked lists is that they are linear data structures. This means that their configuration and scanning have order and order. You can think of a linear data structure like a hop scotch game. To reach the end of the list, you must traverse all items in the list, in order or in order. However, the linear structure is the inverse of the nonlinear structure. For nonlinear data structures, the items need not be in order. In other words, you can traverse the data structure nonsequentially.

We may not always notice this, but we use linear and nonlinear data structures every day! When organizing data into a hash (sometimes called a dictionary), we implement a nonlinear data structure. Trees and graphs are also nonlinear data structures to scan in various ways, but we will explain them in more detail later this year. The biggest difference between arrays and linked lists is how they use memory on our machine. We are using dynamically typed languages ​​(Ruby, JavaScript, Python, etc.), we do not have to worry about how much memory an array uses when writing code every day.