{"id":38376,"date":"2019-10-31T22:23:21","date_gmt":"2019-10-31T19:23:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/web-3-0-vtoroj-podhod-k-snaryadu\/"},"modified":"2019-10-31T22:23:21","modified_gmt":"2019-10-31T19:23:21","slug":"web-3-0-vtoroj-podhod-k-snaryadu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/web-3-0-vtoroj-podhod-k-snaryadu","title":{"rendered":"WEB 3.0 \u2014 un secondo approccio al tema","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"WEB 3.0 \u2014 un secondo approccio al tema\" src=\"\/wp-content\/uploads\/2019\/09\/5f43edf0c4097fe89b1de81b9bcec89d.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nIniziamo con un po' di storia.<\/p>\n<p>Il Web 1.0 \u00e8 una rete per accedere ai contenuti pubblicati sui siti dai loro proprietari. Pagine HTML statiche, accesso alle informazioni solo in lettura, la principale gioia sono i collegamenti ipertestuali che portano ad altre pagine di questo e di altri siti. Il formato tipico di un sito \u00e8 quello di una risorsa informativa. Un'epoca di trasferimento di contenuti offline online: digitalizzazione di libri, scansione di immagini (le fotocamere digitali erano ancora rare).<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Il Web 2.0 \u00e8 una rete sociale che unisce le persone. Gli utenti, completamente immersi nel mondo di internet, creano contenuti direttamente sulle pagine web. Siti interattivi e dinamici, tagging dei contenuti, syndication, mash-up technology, AJAX, servizi web. Le risorse informative cedono il passo a social network, blog hosting e wiki. \u00c8 l'epoca della generazione di contenuti online.<\/p>\n<p>\u00c8 chiaro che il termine \"web 1.0\" \u00e8 emerso solo dopo l'apparizione del \"web 2.0\" per designare l'antico internet. E praticamente subito cominciarono le conversazioni sulla futura versione 3.0. Ci sono state diverse visioni di questo futuro, tutte naturalmente collegate al superamento delle carenze e delle limitazioni del web 2.0.<\/p>\n<p>\u0420\u0443\u043a\u043e\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f Netscape.com \u0414\u0436\u0435\u0439\u0441\u043e\u043d\u0430 \u041a\u0430\u043b\u0430\u043a\u0430\u043d\u0438\u0441\u0430 \u043f\u0440\u0435\u0436\u0434\u0435 \u0432\u0441\u0435\u0433\u043e \u0432\u043e\u043b\u043d\u043e\u0432\u0430\u043b\u043e \u043d\u0438\u0437\u043a\u043e\u0435 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430, \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438, \u0438 \u043e\u043d \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u043e\u0436\u0438\u043b, \u0447\u0442\u043e \u0431\u0443\u0434\u0443\u0449\u0435\u0435 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430 \u0437\u0430 \u201c\u043e\u0434\u0430\u0440\u0435\u043d\u043d\u044b\u043c\u0438 \u043b\u044e\u0434\u044c\u043c\u0438\u201d, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0430\u0447\u043d\u0443\u0442 \u201c\u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u0432\u044b\u0441\u043e\u043a\u043e\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0435\u043d\u0442&#187; (\u0412\u0435\u0431 3.0, \u00ab\u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0435\u00bb \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435, 2007). \u041c\u044b\u0441\u043b\u044c \u0432\u043f\u043e\u043b\u043d\u0435 \u0441\u0435\u0431\u0435 \u0440\u0430\u0437\u0443\u043c\u043d\u0430\u044f, \u043d\u043e \u043a\u0430\u043a \u0438 \u0433\u0434\u0435 \u043e\u043d\u0438 \u044d\u0442\u043e \u0431\u0443\u0434\u0443\u0442 \u0434\u0435\u043b\u0430\u0442\u044c, \u043d\u0430 \u043a\u0430\u043a\u0438\u0445 \u0441\u0430\u0439\u0442\u0430\u0445, \u043e\u043d \u043d\u0435 \u043e\u0431\u044a\u044f\u0441\u043d\u0438\u043b. \u041d\u0443 \u043d\u0435 \u043d\u0430 \u0424\u0435\u0439\u0441\u0431\u0443\u043a\u0435 \u0436\u0435. <\/p>\n<p>L'autore del termine \"web 2.0\", Tim O'Reilly, ha giustamente suggerito che non \u00e8 necessario un intermediario cos\u00ec inaffidabile come una persona per pubblicare informazioni online. I dati possono essere forniti a Internet anche da dispositivi tecnici. E questi stessi dispositivi tecnici possono leggere i dati direttamente dai repository web. In sostanza, Tim O'Reilly ha proposto di associare il web 3.0 al termine a noi familiare \"internet delle cose\".<\/p>\n<p>Uno dei fondatori del World Wide Web, Tim Berners-Lee, ha visto nella futura versione di Internet la realizzazione del suo sogno di lunga data (1998) riguardo al web semantico. La sua interpretazione del termine ha prevalso: la maggior parte delle persone che menzionavano \"web 3.0\" fino a poco tempo fa si riferiva proprio al web semantico, cio\u00e8 a una rete in cui il contenuto delle pagine web fosse significativo per i computer e leggibile dalle macchine. Tra il 2010 e il 2012 ci sono stati molti discorsi sull'ontologizzazione, e sono emersi numerosi progetti semantici, ma il risultato \u00e8 noto a tutti: continuiamo a usare Internet nella sua versione 2.0. Di fatto, sono sopravvissuti solo lo schema di markup semantico Schema.org e i grafi della conoscenza dei giganti di Internet come Google, Microsoft, Facebook e LinkedIn.<\/p>\n<p>Le nuove ondate di innovazione digitale hanno contribuito a nascondere il fallimento del web semantico. L'interesse della stampa e del pubblico si \u00e8 spostato su big data, Internet of Things, deep learning, droni, realt\u00e0 aumentata e, naturalmente, blockchain. Se i primi della lista sono per lo pi\u00f9 tecnologie offline, blockchain \u00e8 essenzialmente un progetto online. Al culmine della sua popolarit\u00e0 tra il 2017 e il 2018, puntava persino a diventare il nuovo internet (un'idea che \u00e8 stata espressa pi\u00f9 volte da uno dei fondatori di Ethereum, Joseph Lubin).<\/p>\n<p>Ma col passare del tempo, la parola \"blockchain\" ha cominciato ad essere associata non pi\u00f9 a un avanzamento verso il futuro, ma piuttosto a speranze ingiustificate. Naturalmente \u00e8 emersa l'idea di un rebranding: perch\u00e9 non parlare di blockchain come di un progetto autonomo, ma includerlo in un stack tecnologico che rappresenta tutto ci\u00f2 che \u00e8 nuovo e luminoso. Per questo \"nuovo\" \u00e8 stato trovato un nome (anche se non nuovo) \"web 3.0\". E per giustificare in qualche modo questo nome non nuovo, \u00e8 stato necessario includere anche la rete semantica nello stack del \"luminoso\". <\/p>\n<p>Quindi, attualmente non \u00e8 il blockchain a essere di tendenza, ma l'infrastruttura di Internet decentralizzato web 3.0, composta da diverse tecnologie fondamentali: blockchain, machine learning, web semantico e Internet delle cose. In numerosi testi emersi nell'ultimo anno, dedicati alla nuova incarnazione del web 3.0, \u00e8 possibile scoprire in dettaglio ciascun componente, ma sfortunatamente non ci sono risposte a domande naturali: come si uniscono queste tecnologie in un tutto, perch\u00e9 le reti neurali hanno bisogno di Internet delle cose, e il blockchain del web semantico? La maggior parte dei team continua a concentrarsi sul blockchain (probabilmente nella speranza di creare una criptovaluta capace di competere con Bitcoin, o semplicemente recuperando investimenti), ma sotto il nuovo slogan \u201cweb 3.0\u201d. Tuttavia, c'\u00e8 almeno qualcosa sul futuro, non solo su speranze ingiustificate.<\/p>\n<p>Ma non \u00e8 tutto cos\u00ec negativo. Ora cercher\u00f2 di rispondere brevemente alle domande precedentemente poste.<\/p>\n<p>Perch\u00e9 una rete semantica ha bisogno della blockchain? Qui non si tratta tanto della blockchain in s\u00e9 (una catena di blocchi crittografati), ma della tecnologia che garantisce l'identificazione degli utenti, la validazione del consenso e la protezione dei contenuti basati su metodi crittografici in una rete peer-to-peer. Dunque, il grafo semantico come rete riceve un'archiviazione decentralizzata affidabile con identificazione crittografica di registrazioni e utenti. Non stiamo parlando di markup semantico di pagine su un hosting gratuito.<\/p>\n<p>Perch\u00e9 una blockchain convenzionale ha bisogno della semantica? L'ontologia riguarda proprio la distribuzione dei contenuti per aree tematiche e livelli. Questo significa che la rete semantica sovrapposta a una rete peer-to-peer \u2014 in altre parole, l'organizzazione dei dati di rete in un unico grafo semantico \u2014 garantisce una naturale clustering della rete, vale a dire la sua scalabilit\u00e0 orizzontale. L'organizzazione a livelli del grafo permette di parallelizzare l'elaborazione di dati semanticamente indipendenti. Questa \u00e8 gi\u00e0 un'architettura dei dati, non un semplice accantonamento di tutto in blocchi e conservazione su tutti i nodi.<\/p>\n<p>Qual \u00e8 il ruolo della semantica e della blockchain nell'Internet delle cose? La blockchain sembra semplice: serve come un archivio sicuro con un sistema di identificazione integrato per gli attori (inclusi i sensori IoT) attraverso chiavi crittografiche. D'altra parte, la semantica consente di segmentare il flusso di dati in cluster tematici, alleggerendo il carico sui nodi. Inoltre, rende i dati inviati dai dispositivi IoT significativi e indipendenti dalle applicazioni. Non sar\u00e0 pi\u00f9 necessario richiedere la documentazione API delle applicazioni.<\/p>\n<p>Rimane da scoprire quale sia il vantaggio reciproco dell'incrocio tra apprendimento automatico e rete semantica. La risposta \u00e8 piuttosto semplice. Dove, se non nel grafo semantico, si pu\u00f2 trovare una cos\u00ec vasta quantit\u00e0 di dati convalidati, strutturati e semanticamente definiti in un formato unico, cos\u00ec necessario per l'addestramento delle reti neurali? D'altra parte, cosa potrebbe analizzare meglio un grafo, se non una rete neurale, per individuare anomalia utili o dannose, come il rilevamento di nuovi concetti, sinonimi o spam? <\/p>\n<p>Ecco il web 3.0 di cui abbiamo bisogno. Jason Calacanis dir\u00e0: avevo ragione, sar\u00e0 uno strumento per creare contenuti di alta qualit\u00e0 da persone dotate. Tim Berners-Lee sar\u00e0 soddisfatto: la semantica regna. E anche Tim O'Reilly avr\u00e0 ragione: il web 3.0 riguarda \"l'interazione di Internet con il mondo fisico\", l'eliminazione del confine tra online e offline, quando dimenticheremo le parole \"accedi alla rete\".<\/p>\n<p>I miei approcci precedenti al tema<\/p>\n<ol>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/255745\/\">Filosofia dell'evoluzione e evoluzione di Internet<\/a><\/noindex> (2012)<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/watch?v=6qXSUp_-las\">Evoluzione di Internet. Futuro di Internet. Web 3.0<\/a><\/noindex> (video, 2013)<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/256083\/\">WEB 3.0. Da un approccio centrato sui siti a uno centrato sugli utenti, dall'anarchia al pluralismo<\/a><\/noindex> (2015)<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/vc.ru\/future\/81683-web-3-0-ili-zhizn-bez-saytov\">WEB 3.0 o vita senza siti<\/a><\/noindex> (2019)<\/li>\n<\/ol>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/468557\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0438\u0441\u0442\u043e\u0440\u0438\u0438. 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