computer science

XGMML

XGMML is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand XGMML rather than just read about it. In short: XGMML (the eXtensible Graph Markup and Modeling Language) is an XML application based on GML which is used for graph description. Functions XGMML is an XML 1.0-based markup language based on the Graph Modeling Language.

Key takeaways

XGMML belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect XGMML to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of XGMML from memory before moving on to harder problems.

Reference excerpt

XGMML (the eXtensible Graph Markup and Modeling Language) is an XML application based on GML which is used for graph description.

Functions XGMML is an XML 1.0-based markup language based on the Graph Modeling Language. The language uses tags to describe the edges and nodes on a graph. It is primarily used to make the graphs more easily exchangeable and readable by different graphing software. XGMML was created for WWWPal system and was intended for use containing the structural information of websites. XGMML is often used for data mining on websites.

Applications supporting XGMML Cytoscape, an open source bioinformatics software platform for visualizing molecular interaction networks, loads and saves networks and node/edge attributes in XGMML Biomax BioXM Knowledge Management Environment, a customizable knowledge management system for life sciences, supports export of semantic network graphs as XGMML files JNets, a network visualization and analysis tool.

See also LOGML, a markup language derived from XGMML

References

External links XGMML Reference (archived copy, original link offline)

Worked examples

Example 1 — a first encounter with XGMML

Start with the simplest possible case. Write down what XGMML claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to XGMML before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about XGMML ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of XGMML

In research: XGMML appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses XGMML in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: XGMML is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer file formats, Graph description languages, Graph theory stubs, so understanding it makes those chapters shorter.
In everyday life: Look for XGMML outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study XGMML in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what XGMML means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain XGMML out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is XGMML in simple terms?

XGMML (the eXtensible Graph Markup and Modeling Language) is an XML application based on GML which is used for graph description. Functions XGMML is an XML 1.0-based markup language based on the Graph Modeling Language.

Why does XGMML matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study XGMML?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on XGMML.