{"id":33477,"date":"2025-06-30T09:03:03","date_gmt":"2025-06-30T07:03:03","guid":{"rendered":"https:\/\/www.codemotion.com\/magazine\/?p=33477"},"modified":"2025-06-30T09:03:05","modified_gmt":"2025-06-30T07:03:05","slug":"prompting","status":"publish","type":"post","link":"https:\/\/www.codemotion.com\/magazine\/it\/intelligenza-artificiale\/deep-learning-it\/prompting\/","title":{"rendered":"Chain-of-Thought Prompting: il trucco per far pensare meglio l\u2019IA"},"content":{"rendered":"\n<p>Abbiamo visto che i modelli linguistici di grandi dimensioni (LLM) sono capaci di generare testi incredibili. Ma quando gli proponiamo problemi complessi, a volte rispondono in modo troppo diretto, senza mostrare il ragionamento che ci aspetteremmo da un essere umano.<br>Qui entra in gioco una tecnica rivoluzionaria: il <em>Chain-of-Thought prompting<\/em>, cio\u00e8 la <em>Catena del Pensiero<\/em>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cos-e-il-chain-of-thought-prompting\">Cos&#8217;\u00e8 il Chain-of-Thought Prompting?<\/h2>\n\n\n\n<p>Immagina di dover risolvere un indovinello complicato. Non diresti subito la risposta, giusto? Prima analizzeresti il problema, divideresti le informazioni in parti pi\u00f9 semplici e penseresti passo dopo passo fino ad arrivare alla soluzione.<br>Il <em>Chain-of-Thought prompting<\/em> serve a far ragionare i modelli LLM in questo stesso modo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-in-cosa-consiste\">In cosa consiste?<\/h3>\n\n\n\n<p>\u00c8 una tecnica in cui si chiede al modello di spiegare il proprio ragionamento, passo dopo passo, prima di dare la risposta finale. Invece di chiedergli solo la soluzione, gli si chiede di mostrare come ci arriva: quali dati usa, quali formule applica, e come collega le informazioni in modo logico. Questo \u00e8 utile soprattutto quando il problema \u00e8 complicato o richiede pi\u00f9 passaggi.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-come-funziona\">Come funziona?<\/h2>\n\n\n\n<p>In pratica, invece di dire:<br><strong>\u201cDammi la risposta a questo problema\u201d<\/strong>,<br>gli diciamo:<br><strong>\u201cSpiegami come arrivi alla risposta\u201d<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-esempio\">Esempio<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Prompt normale:<\/strong><br>Qual \u00e8 il numero successivo nella sequenza 2, 4, 8?<br><strong>Risposta del modello:<\/strong> 16<\/li>\n\n\n\n<li><strong>Prompt con Chain-of-Thought:<\/strong><br>Spiega passo dopo passo come arrivi al numero successivo dopo 2, 4, 8.<br><strong>Risposta:<\/strong> Il primo numero \u00e8 2. Il secondo \u00e8 4, cio\u00e8 2\u00d72. Il terzo \u00e8 8, cio\u00e8 4\u00d72. La regola sembra essere &#8220;moltiplicare per 2&#8221;. Quindi 8\u00d72 = 16.<\/li>\n<\/ul>\n\n\n\n<p>Con questa tecnica non otteniamo solo la risposta, ma anche il motivo per cui \u00e8 stata data.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-tecniche-per-usare-il-chain-of-thought-prompting\">Tecniche per usare il Chain-of-Thought Prompting<\/h2>\n\n\n\n<p>Ecco alcuni modi per usarlo:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u201cPensiamo passo dopo passo\u201d<\/strong><br>Questa semplice frase spesso basta per far ragionare il modello.<\/li>\n\n\n\n<li><strong>Domande guida<\/strong><br>Inserisci domande che aiutino il modello a riflettere, tipo:\n<ul class=\"wp-block-list\">\n<li>Quali sono le informazioni importanti?<\/li>\n\n\n\n<li>Cosa possiamo dedurre?<\/li>\n\n\n\n<li>Come si collegano le informazioni?<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Few-shot prompting con esempi CoT<\/strong><br>Inserisci nel prompt uno o due esempi dove mostri come ragionare passo dopo passo. Il modello seguir\u00e0 lo stesso metodo.<\/li>\n\n\n\n<li><strong>Scomposizione del problema<\/strong><br>Se il problema \u00e8 difficile, chiedi di dividerlo in parti e risolvere ognuna prima di dare la risposta finale.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-perche-il-chain-of-thought-e-importante\">Perch\u00e9 il Chain-of-Thought \u00e8 importante?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Maggiore precisione nei problemi complessi<\/strong><br>Aiuta il modello a dare risposte pi\u00f9 corrette quando serve logica, inferenza o pianificazione.<\/li>\n\n\n\n<li><strong>Migliore comprensione del ragionamento<\/strong><br>Vedendo i passaggi possiamo capire se il modello ha ragionato bene.<\/li>\n\n\n\n<li><strong>Pi\u00f9 facile correggere errori<\/strong><br>Se la risposta \u00e8 sbagliata, possiamo trovare dove si \u00e8 \u201cperso\u201d nel ragionamento.<\/li>\n\n\n\n<li><strong>Ragionamento pi\u00f9 umano<\/strong><br>I passaggi aiutano a rendere il processo pi\u00f9 naturale, come ragionerebbe una persona.<\/li>\n\n\n\n<li><strong>Trasparenza<\/strong><br>Possiamo vedere come il modello \u00e8 arrivato alla risposta.<\/li>\n\n\n\n<li><strong>Versatilit\u00e0<\/strong><br>Funziona in matematica, logica, decisioni, analisi dati e molto altro.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-esempi-pratici\">Esempi pratici<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-esempio-semplice-di-problema-matematico\">1. Esempio semplice di problema matematico<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">pythonCopiaModifica<code>import openai\n\n# Inserisci la tua API key\nopenai.api_key = \"LA_TUA_API_KEY\"\n\n# Prompt con catena del pensiero\nprompt = (\n    \"Risolvi il seguente problema matematico spiegando passo dopo passo:\\n\"\n    \"Problema: Un treno percorre 300 chilometri in 3 ore. Qual \u00e8 la velocit\u00e0 media del treno?\\n\\n\"\n    \"Istruzioni:\\n\"\n    \"1. Trova la formula per calcolare la velocit\u00e0 media.\\n\"\n    \"2. Sostituisci i valori nella formula.\\n\"\n    \"3. Fai il calcolo e spiega il risultato.\\n\"\n    \"Risposta:\"\n)\n\nresponse = openai.ChatCompletion.create(\n    model=\"gpt-4\",\n    messages=[\n        {\"role\": \"system\", \"content\": \"Sei un esperto di matematica e spieghi ogni passaggio del tuo ragionamento.\"},\n        {\"role\": \"user\", \"content\": prompt}\n    ]\n)\n\nprint(response.choices[0].message.content)\n<\/code><\/pre>\n\n\n\n<p><strong>Spiegazione<\/strong>:<br>Il prompt guida il modello a usare la formula della velocit\u00e0 (velocit\u00e0 = distanza \/ tempo), sostituire i valori (300 \/ 3) e spiegare come si arriva al risultato (100 km\/h).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-esempio-complesso-con-piu-passaggi\">2. Esempio complesso con pi\u00f9 passaggi<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">pythonCopiaModifica<code>import openai\n\nopenai.api_key = \"LA_TUA_API_KEY\"\n\nmessages = [\n    {\"role\": \"system\", \"content\": (\n        \"Sei un esperto nell'analisi di problemi complessi. Usa la tecnica chain-of-thought per spiegare ogni passaggio del tuo ragionamento in modo chiaro.\"\n    )},\n    {\"role\": \"user\", \"content\": (\n        \"Esempio:\\n\"\n        \"Una azienda ha diversi reparti con risultati trimestrali diversi. Serve capire come l\u2019aumento del budget marketing influisce sulle vendite.\\n\\n\"\n        \"Passaggi suggeriti:\\n\"\n        \"1. Elenca i reparti e i dati di vendita.\\n\"\n        \"2. Collega la spesa marketing alle variazioni delle vendite.\\n\"\n        \"3. Valuta se c\u2019\u00e8 correlazione tra aumento di budget e vendite.\\n\\n\"\n        \"Ora risolvi questo problema usando chain-of-thought:\\n\"\n        \"Problema: In una campagna pubblicitaria si sono investiti 5000 dollari, ottenendo un aumento di 150 unit\u00e0 vendute, ognuna a 20 dollari. Spiega come calcolare il ROI (ritorno sull\u2019investimento), passo dopo passo.\"\n    )}\n]\n\nresponse = openai.ChatCompletion.create(\n    model=\"gpt-4\",\n    messages=messages\n)\n\nprint(response.choices[0].message.content)\n<\/code><\/pre>\n\n\n\n<p><strong>Spiegazione<\/strong>:<br>Il prompt chiede al modello di spiegare il calcolo del ROI:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>calcolare i guadagni totali (150\u00d720 = 3000 USD),<\/li>\n\n\n\n<li>confrontarli con l\u2019investimento (5000 USD),<\/li>\n\n\n\n<li>e quindi calcolare il ROI usando la formula<br>(guadagno\u2212investimento)\/investimento\u00d7100(guadagno &#8211; investimento) \/ investimento \u00d7 100(guadagno\u2212investimento)\/investimento\u00d7100<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-migliori-pratiche-per-usare-il-cot\">Migliori pratiche per usare il CoT<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Sii specifico<\/strong>:<br>Scrivi chiaramente quali passaggi vuoi che il modello segua.<\/li>\n\n\n\n<li><strong>Dai esempi<\/strong>:<br>Inserisci esempi con spiegazioni dettagliate per far capire al modello come comportarsi.<\/li>\n\n\n\n<li><strong>Dai un buon contesto iniziale<\/strong>:<br>Il messaggio iniziale deve spiegare che tipo di esperto deve essere il modello.<\/li>\n\n\n\n<li><strong>Prova e migliora<\/strong>:<br>Se il risultato non ti convince, modifica il prompt e riprova.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-il-futuro-del-ragionamento-in-ai\">Il futuro del ragionamento in AI<\/h2>\n\n\n\n<p>Il <em>chain-of-thought prompting<\/em> \u00e8 un grande passo avanti nel modo in cui interagiamo con i modelli linguistici. Non solo otteniamo risposte, ma anche il percorso che ha portato a quelle risposte.<br>Questa tecnica migliora la precisione, la trasparenza e la collaborazione tra umani e intelligenza artificiale.<\/p>\n\n\n\n<p>Che tu stia risolvendo problemi matematici o analizzando dati complessi, il CoT ti aiuta a entrare davvero nella \u201ctesta\u201d del modello e a ottenere risposte pi\u00f9 chiare, affidabili e ragionate.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Abbiamo visto che i modelli linguistici di grandi dimensioni (LLM) sono capaci di generare testi incredibili. Ma quando gli proponiamo problemi complessi, a volte rispondono in modo troppo diretto, senza mostrare il ragionamento che ci aspetteremmo da un essere umano.Qui entra in gioco una tecnica rivoluzionaria: il Chain-of-Thought prompting, cio\u00e8 la Catena del Pensiero. Cos&#8217;\u00e8&#8230; <a class=\"more-link\" href=\"https:\/\/www.codemotion.com\/magazine\/it\/intelligenza-artificiale\/deep-learning-it\/prompting\/\">Read more<\/a><\/p>\n","protected":false},"author":313,"featured_media":28562,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","_uag_custom_page_level_css":"","_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[10281],"tags":[11561],"collections":[11708],"class_list":{"0":"post-33477","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-deep-learning-it","8":"tag-machine-learning-it","9":"collections-dalla-community","10":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.5) - 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