Posts Tagged 'NLP'

Questionnaire 3: Chatterbots

A chatterbot (chat bots, talk bots) is a type of conversational agent; it is a computer program known as Artificial Conversational Entity (ACE), which is designed to simulate a real conversation with human users.

ASIMO, created by Honda, is a humanoid robot that is able to walk and interact with humans

ASIMO, created by Honda, is a humanoid robot that is able to walk and interact with humans.

And when we talk about a simulation, we really mean that because chatterbots are not capable of “understanding” the conversation. The way they “converse” is just simply by recognizing words or phrases from the human user, which allows them to use pre-calculated responses which can move the conversation on in an apparently meaningful way without requiring them to know what they are talking about.

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Questionnaire 3: Question Answering (QA)

Have you ever asked yourself what happens when you introduce a question in your computer? No? Never? Then you will get surprised with today’s post because I am going to talk about Question Answering (QA).

Question Answering (QA)

Question Answering (QA)

Question Answering (QA) is, in information retrieval, the task of answering automatically a question asked in natural language. In order to provide you with a proper answer a QA computer program can use either a pre-structured database or a collection of natural language documents (such as the World Wide Web, for instance).

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Questionnaire 2: Word Sense Disambiguation & Named Entity Recognition

We have talked in the previous post about Machine Translation (MT) because it is considered a sub-field of the Computational Linguistics that we are currently studying. Broadly speaking, MT consists of translating words or speech from one natural language to another one using translation software. As we said, MT faces two problems in two different sub-areas of Natural Language Processing (NLP) that we are going to discover today in this post.

The Tower of Babel by Pieter Brueghel the Elder. "Come, let us go down and confuse their language so they will not understand each other." (Genesis 11:7)

The Tower of Babel by Pieter Brueghel the Elder. "Come, let us go down and confuse their language so they will not understand each other." (Genesis 11:7)

Word Sense Disambiguation (WSD):

In the first place, and as you all may have guessed by now, Word Sense Disambiguation (WSD) consists of identifying which sense of a word is the most suitable in a given sentence, considering, obviously, that the word has a large number of distinct senses. To achieve this goal there are two different possible approaches: deep approaches and shallow approaches.

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Questionnaire 2: Machine Translation (MT)

Now, we have a clear idea of what Natural Language Processing (NLP) is; besides, we have already mentioned the most common tasks that have to do with NLP. In this post, what I would like to do is to start explaining briefly some of those topics for you to have a better understanding of them.

Trans·la·tion

Trans·la·tion

Machine Translation (MT):

Machine Translation (MT) is a sub-field of Computational Linguistics whose main purpose is to develop computer software in order to translate automatically text or speech from one natural language to another one. At a first approach, MT substitutes words in one natural language for words in the target language. However, with the use of several corpus techniques we can obtain more complex translations.

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Questionnaire 2: Classic HLT topics

Those of you who are hooked on Human Language Technologies (HLT) will already  know that along the year researchers publish books, give lectures and conferences… about different topics that have to do with this area of Computational Linguistics that we are currently studying.

"Oh, mother! your databases are *so* 20th century!" "I just don't understand you unestructured kids!"

"Oh, mother! Your databases are *so* 20th century!" "I just don't understand you unstructured kids!"

For that reason I have decided to bring here some of the most classic or important topics discussed in the field of Natural Language Processing (NLP). Here come the examples:

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Questionnaire 1: What is Human Language Technology? (Expert opinions) (II)

We continue quoting definitions of what Human Language Technology (HLT) is, expressed by authorised scholars and institutions in order to gain a real insight into this interesting topic. In this second post, as we have previously published Hans Uszkoreit’s thesis, we are going to make a reference to an HLT definition by a renowned university.

The University of Sheffield - Portobello centre

The University of Sheffield (Portobello centre)

The definition that we are going to present today was given by the Natural Language Processing Group at the University of Sheffield (South Yorkshire, England), in whose head we find Yorick Wiks, another important and distinguished researcher in the field of computer science and artificial intelligence. They described Natural Language Processing as follows:

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Questionnaire 1: What is Human Language Technology? (Expert opinions) (I)

Now that we have a general idea of what Human Language Technology (HLT) is, we are going to quote some definitions on this very same topic that relevant scholars and institutions have previously published in order to clarify our concepts

Human-machine interaction

Human-machine interaction

The first definition that we are going to present was given by one of the most important researchers in the field of computational linguistics: Hans Uszkoreit, professor at the Saarland University and head of the Language Technology Lab at the German Research Centre for Artificial Intelligence (DFKI). In an article entitled “Language Technology: a first overview” Mr. Uszkoreit explained what Human Language Technology is in the following terms:

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  • Critical Essay: Focus on form VS. Focus on meaning 11 February, 2014
    Focus on form refers to instruction that focuses learners’ attention to linguistic structure within a meaningful context. In what ways do Swain (1985) and Van Patten (1990) provide empirical support for focus on form as opposed to an exclusive focus ...
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    “Crises are predictable” said the economist Didier Sornette at TEDGlobal 2013. According to the risk economist we have been living by the illusions produced by the high economic growth that had […]
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    Las inundaciones que sufrió Vizcaya, pero especialmente Bilbao, en agosto de 1983 marcaron un antes y un después en la historia “del bocho”. Las causas de esta terrible catástrofe se centran en la llamada “gota fría” que supone una precipitación abundante y ráfagas de viento huracanas que en ocasiones pueden ir acompañadas de tormentas eléctricas […] […]
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    As we all know, tourist is the person who travels away from her home and spends more than 24 hours and less than a year in a certain place. People can travel for business and professional reasons, for leisure and holiday … Continue reading →
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