computer science

HAtom

HAtom 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 HAtom rather than just read about it. In short: hAtom is a draft Microformat for marking up (X)HTML, using classes and rel attributes, content on web pages that contain blog entries or similar chronological content. These can then be parsed as feeds in Atom, a web syndication standard. hAtom is available as version 0.1, released 28 February 2006, and is used widely throughout the Web.

Key takeaways

HAtom 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 HAtom to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of HAtom from memory before moving on to harder problems.

Reference excerpt

hAtom is a draft Microformat for marking up (X)HTML, using classes and rel attributes, content on web pages that contain blog entries or similar chronological content. These can then be parsed as feeds in Atom, a web syndication standard. hAtom is available as version 0.1, released 28 February 2006, and is used widely throughout the Web.

Web Slices hAtom is also used as the basis for individually subscribable parts of web pages, called Web Slices, which are understood by Internet Explorer 8 and can be understood by Firefox, using third-party add-ons. The annotations indicated via the hAtom tags added to mark-up determine the portions of content obtained via the Web Slice filter.

See also List of content syndication markup languages

References

External links hAtom at the Microformats Wiki

Worked examples

Example 1 — a first encounter with HAtom

Start with the simplest possible case. Write down what HAtom 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 HAtom 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 HAtom 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 HAtom

In research: HAtom 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 HAtom 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: HAtom is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer programming stubs, Microformats, Web syndication formats, so understanding it makes those chapters shorter.
In everyday life: Look for HAtom 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 HAtom in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what HAtom 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 HAtom out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HAtom in simple terms?

Why does HAtom 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 HAtom?

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 HAtom.