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Autore principale:	Caio Saraiva Coneglian
Natura:	Artículo científico
Lingua:	pt
Pubblicazione:	Universidade Federal do Rio Grande do Sul 2017
Soggetti:	Ciencias de la Información Big data Discriminação Análises de dados Fatores potencialmente discriminatórios
Accesso online:	https://www.redalyc.org/articulo.oa?id=465649115004 https://www.redalyc.org/journal/4656/465649115004/ https://www.redalyc.org/journal/4656/465649115004/html/ https://www.redalyc.org/journal/4656/465649115004/465649115004.epub https://www.redalyc.org/journal/4656/465649115004/movil
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Sommario:

Big Data: fatores potencialmente discriminatórios em análise de dados Caio Saraiva Coneglian José Eduardo Santarem Segundo Ricardo Cesar Gonçalves Sant'ana Ciencias de la Información Big data Discriminação Análises de dados Fatores potencialmente discriminatórios As mudanças tecnológicas vividas a partir da virada do século caus a ram uma revolução na sociedade, chamada de Big Data, em que as análises de dados para determinar padrões e comportamentos puderam utilizar grandes quantidades de dados. V erifica - se que algumas análises , no contexto do Big D a ta, estão sendo conduzidas a ger ar resultados discriminatórios. O est u do tem como objetivo identificar fatores que , potencialmente, po ssa m gerar discrimin a ção durante o processo de análise de dados. Para tal, a metodologia utiliz a da foi de natureza qual itativa, exploratória e bibliográfica , en u merando em um quadro os casos de discriminação. Como resultado, identificam - se fatores possivelme n te discriminatórios, além de ser feita uma explan a ção desses fatores . Por meio da pesquisa, verifica - se uma necessid ade de existir reflexões profundas dos r e sultados que são obtidos a partir de análises de dados, ficando clar a a necessid a de da Ciência da Informação retratar tais questões, a fim de apontar os cam i nhos a serem tomados. 2017 artículo científico 1807-8893 https://www.redalyc.org/articulo.oa?id=465649115004 https://www.redalyc.org/journal/4656/465649115004/ https://www.redalyc.org/journal/4656/465649115004/html/ https://www.redalyc.org/journal/4656/465649115004/465649115004.epub https://www.redalyc.org/journal/4656/465649115004/movil pt http://www.redalyc.org/revista.oa?id=4656 Em Questão application/pdf Universidade Federal do Rio Grande do Sul Em Questão (Brasil) Num.1 Vol.23

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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