P455.pdf YAGO - D5: Databases and Information Systems (Max-Planck-Institut für Informatik) Overview YAGO is a huge semantic knowledge base, derived from Wikipedia WordNet and GeoNames. Currently, YAGO has knowledge of more than 10 million entities (like persons, organizations, cities, etc.) and contains more than 120 million facts about these entities. YAGO is special in several ways: The accuracy of YAGO has been manually evaluated, proving a confirmed accuracy of 95%. Every relation is annotated with its confidence value.YAGO combines the clean taxonomy of WordNet with the richness of the Wikipedia category system, assigning the entities to more than 350,000 classes.YAGO is an ontology that is anchored in time and space. YAGO is developed jointly with the DBWeb group at Télécom ParisTech University.
Freebase Freebase is a large collaborative knowledge base consisting of metadata composed mainly by its community members. It is an online collection of structured data harvested from many sources, including individual 'wiki' contributions. Freebase aims to create a global resource which allows people (and machines) to access common information more effectively. It was developed by the American software company Metaweb and has been running publicly since March 2007. Freebase data is freely available for commercial and non-commercial use under a Creative Commons Attribution License, and an open API, RDF endpoint, and database dump are provided for programmers. Overview On March 3, 2007, Metaweb publicly announced Freebase, described by the company as "an open shared database of the world's knowledge," and "a massive, collaboratively edited database of cross-linked data." Development Organization and policy In this manner, Freebase differs from the wiki model in many ways.
Math of Ideas: A Word is Worth a Thousand Vectors Word vectors give us a simple and flexible platform for understanding text, there are a few diverse examples that should help build your confidence in developing and deploying NLP systems and what problems they can solve. By Chris Moody (Stitchfix). Standard natural language processing (NLP) is a messy and difficult affair. It requires teaching a computer about English-specific word ambiguities as well as the hierarchical, sparse nature of words in sentences. At Stitch Fix, word vectors help computers learn from the raw text in customer notes. While we're not totally "there" yet with the holy grail to NLP, word vectors (also referred to as distributed representations) are an amazing tool that sweeps away some of the issues of dealing with human language. The following example set the natural language community afire 1 back in 2013: king - man + women = queen In this example, a human posed a question to a computer: what is king - man + woman? Similar words are nearby vectors
Toward Understanding Syntactic Processing and Phonological Awareness in Specific Language Impairment :: Young Scientist Journal Subject-verb agreement and tense agreement conditions for the ten participants were binned together to make two main conditions: syntactically correct and syntactic violation. Cluster randomization analysis on this pair of conditions revealed one significant cluster of electrodes (cluster p=0.048), showing increased amplitude for the violation condition. The cluster stretched from 430ms to 900ms, which is the expected range of the P600 component, after the onset of the critical-word at 0 ms. Figure 2A compares ERPs from correct and violation conditions and illustrates a difference in the P600 between these conditions. This difference indicates that TLD participants detect grammatical violations in sentences when these violations include incorrect subject-verb agreement and incorrect tense agreement. The significant cluster (430ms to 900ms after the onset of the critical verb) is distinguished by dotted lines towards the middle and end of the graph. cluster at various time points. 1. 2.
Visual Data Web - Visually Experiencing the Data Web Aurelius | Applying Graph Theory and Network Science Pinali / eTBLAST ETBLAST è un motore di ricerca per similarità ed offre l'accesso alle seguenti banche dati: NASA technical reports database Il server di ETBLAST confronta la domanda fatta dall'utente in formato testo con le basi di dati utilizzando un algoritmo di ricerca (brevettato) basato sulla sensibilità delle parole inserite. Quando la maggior parte degli utilizzatori della banca dati PubMed (Medline) effettua la ricerca selezionando una o due parola chiave per descrivere il proprio argomento (soggetto), quindi passa in rassegna attraverso una lista lunga i risultati ottenuti. Quando trova un abstracts interessante lo seleziona e cerca gli articoli correlati "Related articles", nella speranza di individuare quelli più attinenti. Se troviamo un'altro articolo, analogamente prendiamo gli articoli correlati e cosi-via. ETBLAST rende tutto molto più facile fornendo i risultati migliori già nella prima ricerca. ETBLAST ordina i risultati in ordine di rilevanza, mentre PubMed li ordina per data.
How Long Does it Take to Learn a New Language? | Literacy, Languages and Leadership How long does it really take to learn a second language? The short answer is, it depends. Most language teachers will tell you that what you put in, is what you get out of language studies. Companies that sell language learning products or software may claim that their method or materials will guarantee fluency in a certain period of time. The reality is that language acquisition is a complex process that involves communication, grammar, structure, comprehension and language production along with reading, writing, speaking and listening, just to name a few of the simpler aspects of language learning. John Archibald and a team of researchers at the University of Calgary conducted a study in 2007 that examined a number of questions relating to second language learning. Their work also found that the age at which a person begins to learn a language matters. For those that don’t have the privilege of learning more than one language from a young age at home, there are other factors. Immersion
Semantic network Typical standardized semantic networks are expressed as semantic triples. History Example of a semantic network "Semantic Nets" were first invented for computers by Richard H. They were independently developed by Robert F. In the late 1980s, two Netherlands universities, Groningen and Twente, jointly began a project called Knowledge Graphs, which are semantic networks but with the added constraint that edges are restricted to be from a limited set of possible relations, to facilitate algebras on the graph. In the subsequent decades, the distinction between semantic networks and knowledge graphs was blurred. In 2012, Google gave their knowledge graph the name Knowledge Graph. Basics of semantic networks A semantic network is used when one has knowledge that is best understood as a set of concepts that are related to one another. Most semantic networks are cognitively based. Examples Using an association list. WordNet Other examples Software tools