The F-score, also known as the F-measure or F1 score, is a statistical measure used to evaluate the performance of a binary classification model. It combines both precision and recall into a single metric to provide a more balanced view of a model's performance, particularly in situations where the class distribution is imbalanced. ### Key Components: 1. **Precision**: This measures the accuracy of the positive predictions.

Physical Security Information Management (PSIM) refers to a comprehensive approach to managing security data and systems for the physical protection of people, property, and assets. It integrates various security technologies and systems, such as surveillance cameras, access control systems, alarm systems, and sensors, into a centralized platform. The goal of PSIM is to enhance situational awareness, streamline security operations, and improve response times to incidents.

A wildfire, also known as a bushfire, forest fire, or grassfire, is an uncontrolled fire that burns in wildland areas, including forests, grasslands, and other ecosystems. Wildfires can occur naturally due to events such as lightning strikes, but they are often exacerbated or ignited by human activities, such as campfires, discarded cigarettes, or arson.

The Transfer-Matrix Method (TMM) is a mathematical technique used primarily in statistical physics, condensed matter physics, and engineering to analyze the properties of one-dimensional systems such as spin chains, quantum systems, and wave propagation in stratified media. The method is particularly useful for studying systems that can be described in terms of discrete degrees of freedom arranged in a lattice.

A tropical year, also known as a solar year, is the time it takes for the Earth to complete one full orbit around the Sun, measured from one vernal equinox to the next. This duration is approximately 365.242190 days, which is why our calendar year is typically 365 days, with a leap year occurring every four years to accommodate for the extra approximately 0.242190 days. The tropical year is significant because it aligns the calendar year with the seasons.

"Transport company stubs" typically refer to various forms of documentation or records that are created during transportation and logistics processes. These stubs serve as proof of transactions, agreements, or service provision and are important for tracking shipments and maintaining records. The term "stub" itself can refer to: 1. **Shipping Stubs**: A physical or electronic record that documents the details of a shipment, including pick-up and delivery information, tracking numbers, and costs.

Transport organizations by country refer to various agencies, companies, and entities responsible for transportation infrastructure, services, and regulations within specific nations. These organizations can oversee public transportation systems, freight logistics, aviation, maritime transport, and more. Here’s an overview of transport organizations in a few key countries: ### United States - **Federal Aviation Administration (FAA)**: Regulates civil aviation. - **Federal Motor Carrier Safety Administration (FMCSA)**: Oversees trucking regulations.

The term "Yuga" refers to a specific age or epoch in Hindu cosmology, particularly within the context of Indian philosophy and mythology. According to Hindu tradition, time is divided into four Yugas, which together represent a cycle of creation and destruction. These Yugas are: 1. **Satya Yuga (or Krita Yuga)**: Often referred to as the Golden Age, this is the age of truth and righteousness.

Travel-related organizations encompass a wide range of entities and groups involved in the travel and tourism industry. These organizations can operate at local, national, or international levels and serve various functions, including promoting travel, providing services, and supporting travel-related businesses. Here are some key types of travel-related organizations: 1. **Tourism Boards**: These are government or non-profit organizations that promote tourism in specific regions or countries. They provide information on attractions, accommodations, and activities to potential visitors.

Triadic closure is a concept from social network theory that refers to the tendency of people in a social network to form connections with others who are already connected to the same individuals. In simpler terms, if two people (let's call them A and B) have a common acquaintance (C), there is a likelihood that A and B will also establish a direct relationship or connection with each other.

Allylic strain refers to the steric and electronic interactions that occur in allylic systems, where substituents are located on adjacent carbon atoms in a double bond configuration or where there is a single carbon-carbon bond adjacent to a double bond. This strain arises mainly from the positioning of substituents at the allylic positions, which can lead to increased steric hindrance and torsional strain.

Supercomputing in China has evolved to become one of the most advanced and influential sectors in the global computing landscape. The country has made significant investments in supercomputing technology, infrastructure, and talent development. Here are some key aspects of supercomputing in China: 1. **Leading Supercomputers**: China has been home to several of the world's fastest supercomputers.

A "weather rock" is a humorous and simple tool often used to indicate weather conditions. It is essentially a rock that is accompanied by a set of guidelines or a legend that explains how to interpret the weather based on the condition of the rock. For example: - If the rock is wet, it's raining. - If the rock is white, it's snowing. - If the rock is moving, it's windy. - If the rock is hard to see, it's foggy.

Prelog strain refers to a type of strain observed in certain polymers that exhibit a characteristic behavior under stress. Particularly, it is defined in the context of the mechanical properties of polymers, where it is related to their ability to deform elastically or plastically. The term is often used in relation to the study of polymer mechanics and the response of materials to external forces.

A tube socket is an electrical component designed to hold vacuum tubes (also known as electron tubes or thermionic valves) in place within a circuit. These sockets provide a secure and reliable connection between the tube's pins and the circuit board or chassis. Tube sockets come in various configurations to accommodate different types of vacuum tubes. They typically feature multiple holes or sockets for the tube's pins, allowing for easy insertion and removal of the tube without soldering or desoldering.

A two-dimensional gas refers to a theoretical model in which gas particles are confined to move in two dimensions, effectively creating a system where all motion occurs on a flat surface (like a plane) rather than in three-dimensional space. This model is often used in statistical mechanics and condensed matter physics to explore and understand the properties of systems that can be approximated as having only two degrees of freedom in spatial motion.

Ursula Gather is a prominent figure in the field of mathematics, particularly known for her work in algebraic geometry and commutative algebra. She has made significant contributions to the understanding of various mathematical concepts and has been involved in academic research and education.

Ultrasonic hearing refers to the ability to perceive sounds at frequencies higher than the upper limit of human hearing, which is typically around 20 kHz (20,000 Hz). While most humans cannot hear sounds above this frequency, some animals, such as bats, dogs, and certain species of rodents, have the capability to detect ultrasonic sounds. These higher-frequency sounds are often used in various animal communication, echolocation, and hunting strategies.

An "undefined variable" typically refers to a variable in programming that has been declared but not initialized with a value or has not been declared at all in the current scope. When you try to access or manipulate an undefined variable, it can lead to errors or unexpected behavior in your code. Here's a breakdown of the concept: 1. **Declaration vs.

An undercompressive shock wave is a type of wave phenomenon that occurs in certain fluid dynamics and gas dynamics contexts. In contrast to traditional shock waves, which are characterized by an increase in pressure, density, and temperature across a discontinuity, undercompressive shock waves exhibit a decrease in pressure and density.