semantics | 易学教程

Why is Java's “protected” less protected than default? [closed]

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问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . In Java, we have four access specifiers: public , protected , package-private (default), and private . This is well known and not an

Why do programmers confuse the term “assembler” with “assembly”? [closed]

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问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . As programmers we need to be precise with our verbal and written communication. Why do so many programmers confuse the term "assembler

Temporal Extraction (i.e. Extract date/time entities from free form text) - How?

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问题 Has anyone found a simple, but effective way to extract date references from text? I've done a fair amount of searching for temporal extraction tools, but there isn't a lot out there. There are a few white papers, but it seems to fall into a subset of the whole semantic web thingy but not given much attention. I'm just looking for something that is 80% effective. There is no need to capture things like "the month after Jan 2009", but basic common dates entities would be nice. I'm open to all

Why do I need a tokenizer for each language? [closed]

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问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . When processing text, why would one need a tokenizer specialized for the language? Wouldn't tokenizing by whitespace be enough? What are the cases where it is not good idea to use simply a white space tokenization? 回答1: Tokenization is the identification of linguistically

Difference between heading inside section or before it in HTML5

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In HTML5, what is the difference between a section with a h eading as child element and a section which is the next sibling of a h eading element? Does the same difference hold for div elements instead of section ? <section> <h1>First section</h1>  </section>  <h1>Second section</h1> <section>  </section> The answers will highly depend upon logical view. <section> <h1>....</h1> </section> On the above case <h1> denotes the heading of the section. Now lets look at another example: <div id="info"> <h1>Sections:</h1> <section> <h1> Section:

Algorithms for Natural Language Understanding

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I wanted to know what algorithms I could use for NLU? For example, let's say I want to start a program, and I have these sentences "Let us start" "Let him start" Obviously, the first sentence should start the program, but not the second one (since it doesn't make sense). Right now, I have am using Stanford's NLP API and have implemented the TokenRegexAnnotator class: CoreMapExpressionExtractor<MatchedExpression> extractor = CoreMapExpressionExtractor.createExtractorFromFile(env, "tr.txt"); So my code "knows" what "Start" should do, that is, "Start" should trigger/start the program. But "Start"

Ambiguity in the standard on undefined behaviour of out of range pointer

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问题 ISO IEC 14882-2011 §5.7/5 States: If both the pointer operand and the result point to elements of the same array object, or one past the last element of the array object, the evaluation shall not produce an overflow; otherwise, the behavior is undefined. This section is used here on stackoverflow from time to time. For instance to argue why the increment of a pointer to nullptr is UB like here. It is then interpreted as, having a pointer that does not point to an element of an array object.

semantic versioning of API bundle

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When starting with a package versioned at 1.0.0 in an API bundle, what should the new version be after adding a new interface to said package? The whitepaper makes this statement regarding compatibility: It should be obvious that binary compatibility plays an important role in backward compatibility. However, backward compatibility is also very dependent on the semantics. If the responsibility of an interface changes it could still be binary compatible but no longer be backward compatible. At the same time... 3.micro — A difference in the micro part does not signal any backward compatibility

When a value is added via Map.put(K, V), must the same instance be returned via Map.get(K)?

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问题 Suppose you have this code: Map<Foo, Bar> map = new HashMap<Foo, Bar>(); Foo foo = new Foo(); Bar bar = new Bar(); map.put(foo, bar); Bar barReturned = map.get(foo); Does Java require that barReturned == bar ? That is, does Java require that barReturned be the same instance as bar ? If not, what semantics are expected? The Javadoc suggests that barReturned == bar must be true, but I'm not 100% sure: V get(Object key) Returns the value to which the specified key is mapped, or null if this map

How to create a basic semantic search in python

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问题 I want to write a basic semantic web crawler using Python, I know that semantic apps use RDF files, but what else? I have some Python RDF modules installed and I started learning how they work. Could you introduce me to the technologies and techniques used in a semantic application? 回答1: The next things you might want to learn are: embedding samantic data in HTML - RDFa, microformats, microdata. Some stats: microformats and RDFa deployment across the Web via DAM.co.uk: querying RDF data -