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Computer Science

Computer Science is the systematic study of algorithmic processes that describe and transform information. It includes the theoretical foundations of information and computation and the practical techniques of applying those foundations to computer systems. Among the many subfields of Computer Science are computer graphics, computer programming, computational complexity theory, and human-computer interaction. Questions about Computer Science, terms such as algorithms and proofs, and methodologies are encouraged in this category.

1,839 Questions

What is a ms-power point.a short essay?

the power point is a process of a project presentation on the screen of computer

Why is fuzzy logic not best in solving uncertainty?

Certainly fuzzy logic is not the best in solving uncertainty, but..... it is on of the best alternatives to that exists to model uncertainty.

How many types of view in oracle?

There are two types of views in Oracle based upon from how many tables data are being fetched.

1. Simple view - In this view, data is coming from only one table.

2. Complex view - In this view, data comes from more than one table.

That's it.

However, Complex views have some limitations. For these follow Oracle documentation.

What is dfa and nfa?

DFA - Deterministic Finite Automata

NFA - Non-Deterministic Finite Automata

Both DFAs and NFAs are abstract machines which can be used to describe languages.

In data mining how do you count True Positive False Negative False Positive and True Negative in a confusion matrix with more than two classes?

There is no automated way of calculating the TP,TN,FP,& FN. You have to determing them manually or atleast the TP. What you can do is create a hash table and enter all the true matches or the true positives. You can then call the hash table in a hash map and detemine the accuracy of your output that's what i did for my paper. Hope this helps

Why should one study octal and Hexadecimal systems when the digital machine understands only binary system?

Octal and hexadecimal numbers are useful for humans as they compactly represent binary numbers:

  • each octal digit represents exactly 3 binary digits
  • each hexadecimal number represents exactly 4 binary digits

For example, instead of trying to read (and remember) the binary number 100111001001 it can be represented as hexadecimal 0x09c9 or octal 04711 which are easier to read (and remember) for humans.

What are the step involved in building a project?

Planning the Strategy (e.g. Project Success and Benefits Management, Stakeholder Management, Value Management, Project Management Plan, Project Risk Management, Project Quality Management, health/Safety and Environmental Management).

Executing the Strategy (e.g. Scope Management, Scheduling, Resource Management, Budgeting and Cost Management, Change Control, Earned Value Management, Information Management and Reporting, Issue Management).

There are also themes in Project Techniques, Business & Commercial, Organisation & Governance, People and the Profession.

What are the integrated science process?

Integrated Science Process SkillsSkillDefinitionExampleIdentifying and Controlling VariablesBeing able to identify variables (recognizing the characteristics of objects or factors in events) that are constant or change under different conditions, AND that can affect an experimental outcome keeping most constant while manipulating only one (the independent) variable.Listing or describing the factors that are thought to, or would, influence the rate at which an ice cube melts in air or waterDefining OperationallyStating how to measure a variable in an experiment, defining the variable according to the actions or operations to be performed on or with itStating that bean growth will be defined as the amount of change in height as measured from the top of the soil to the tip of the longest stem in centimeters per weekFormulating HypothesesStating or constructing a statement, that is tentative or testable, about what is thought to be the expected outcome of an experiment (based on reasoningMaking a statement to be used as the basis for an experiment; "if one ice cube is placed in cool water and an identical cube is placed in warm water, then the cube in the warmer water will melt first, or the greater the amount of organic matter added to the soil, the greater the amount the bean growthRecording and InterpretingCollecting bits of information about objects and events that illustrate a specific situation; organizing and analyzing data that have been obtained and drawing conclusions from it by determining apparent patterns or relationships in the dataRecording data from an experiment and forming a conclusion that relates trends in data to variables; studying a graph of data collected relating variables and determining a relationship between the variablesExperimentingBeing able to conduct an experiment, including asking an appropriate question, stating an hypothesis, identifying and controlling variables, operationally defining those variables, designing a "fair" experiment, conducting the experiment, and interpreting the results of an experimentThe entire process of conducting an experiment to determine the relation between soil conditions and plant growth, population and pollution, etcFormulating ModelsCreating a mental or physical model of a process, object or eventDrawing a diagram; producing a picture that illustrates information about ice cube melting; writing to describe how the process of evaporation and condensation inter-relate in the water cycle, illustrating by analogyMaking DecisionsIdentifying alternatives and choosing a course of action from among the alternatives after basing the judgment for the selection on justifiable reasonsIdentifying alternative ways to store ice cuvbes to avoid causing them to melt; analyzing the consequences of each alternative such as the cost, the effect on other people or on the environment; using justifiable reasons as the basis for making the decision; choosing freely from the alternatives

http://131.156.85.98/~scienceed/p493/inteproc.HTML

Difference between crisp logic and fuzzy logic?

Crisp :

  • Binary logic
  • It may be occur or non occur
  • indicator function

Fuzzy logic

  • Continuous valued logic
  • membership function
  • Consider about degree of membership

How do you make a Logic for this riddle suppose you want to make ten rupees out of 2 and 3 rupees notes so how to calculate all the combination?

1st combination

2 + 2 + 2 + 2 + 2 = 10

5 of 2 makes 10

2nd combination

3 + 3 + 2 + 2 = 10

2 of 3 and 2 of 2 makes 10

How to write logic for equivalent?

How can you promote patriotism?

By teaching children the history of their country in an engaging and neutral way.

Propagation of operation in object modeling?

Propagation means triggering ie something which fires automatically. Thepropogation of operation is applied with aggregation, if some operation is applied with the high level aggrigate the same operation will be performed with all lower aggregates. For example in aggregation between document and paragraph if we will perform an operation copy with document it will automatically applied with paragraph also. This propagation of operation.

kailash

Why is a high level language less error prone?

High level languages are far more descriptive and, generally, more like a natural language. In my experience, it has been a lot easier to make a typo in a low level language because you are doing things like directly accessing memory locations and using registers for storage.

What is artificial cognition?

Cognition is the development of information to knowledge. The act of cognition consists of representing and transforming information. This can be done by sensing something directly, or indirectly by reasoning.

Artificial cognition is the process of representing and transforming information artificially.

It is done by representing multidimensional intersections of sets in bitwise manner so they can be operated on by logical instructions in a computer.

Using this technology, a computer, having a database with definitions of motorboat, taxi, rowboat, and rickshaw, can conclude that a taxi is to a motorboat as a rickshaw is to a rowboat, in as few as four clock cycles, provided the computers registers are big enough to hold the definitions and the definitions are already loaded.

An isp has a block of 1024 addresses.it needs to be divide the addresses to 1024 customers does it need subnetting?

No.

If you have one IP per customer, you don't need to create smaller subnets.

(You won't have enough addresses though - the first and last addresses of the block will be the network and broadcast addresses and won't be useable. You'll only have 1022 usable addresses)

What is full form of DFA and NFA?

DFA - deterministic finite automata

NFA - non-deterministic finite automata

How are floating point numbers handled as binary numbers?

Floating point numbers are typically stored as numbers in scientific notation, but in base 2. A certain number of bits represent the mantissa, other bits represent the exponent. - This is a highly simplified explanation; there are several complications in the IEEE floating point format (or other similar formats).

Floating point numbers are typically stored as numbers in scientific notation, but in base 2. A certain number of bits represent the mantissa, other bits represent the exponent. - This is a highly simplified explanation; there are several complications in the IEEE floating point format (or other similar formats).

Floating point numbers are typically stored as numbers in scientific notation, but in base 2. A certain number of bits represent the mantissa, other bits represent the exponent. - This is a highly simplified explanation; there are several complications in the IEEE floating point format (or other similar formats).

Floating point numbers are typically stored as numbers in scientific notation, but in base 2. A certain number of bits represent the mantissa, other bits represent the exponent. - This is a highly simplified explanation; there are several complications in the IEEE floating point format (or other similar formats).

Advantages and disadvantages of bubble sort?

This algorithm has several advantages. It is simple to write, easy to understand and it only takes a few lines of code. The data is sorted in place so there is little memory overhead and, once sorted, the data is in memory, ready for processing. The major disadvantage is the amount of time it takes to sort. The average time increases almost exponentially as the number of table elements increase. Ten times the number of items takes almost one hundred times as long to sort.




How many bit strings are there of length eight?

Every bit can either be a 0 or 1. So to find the amount of bit strings of length either, you do 2length to find the amount of bit strings there are of a given length.

When is relation in 2NF?

A relation may be in 2NF if

1. it is in 1NF &

2. Every non prime attribute functional dependent on primary attribute

What is the first np-hard problem?

You can use the bounded tiling problem. Given a problem in NP A, it has a turing machine M that recognizes its language. We construct tiles for the bounded tiling problem that will simulate a run of M.

Given input x, we ask if there is a tiling of the plane and answer that will simulate a run of M on x. We answer true iff there is such a tiling.