ActivityPub Viewer

A small tool to view real-world ActivityPub objects as JSON! Enter a URL or username from Mastodon or a similar service below, and we'll send a request with the right Accept header to the server to view the underlying object.

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{ "@context": [ "https://www.w3.org/ns/activitystreams", { "ostatus": "http://ostatus.org#", "atomUri": "ostatus:atomUri", "inReplyToAtomUri": "ostatus:inReplyToAtomUri", "conversation": "ostatus:conversation", "sensitive": "as:sensitive", "toot": "http://joinmastodon.org/ns#", "votersCount": "toot:votersCount", "blurhash": "toot:blurhash", "focalPoint": { "@container": "@list", "@id": "toot:focalPoint" }, "Hashtag": "as:Hashtag" } ], "id": "https://sigmoid.social/users/lysander07/statuses/114501453902259800", "type": "Note", "summary": null, "inReplyTo": null, "published": "2025-05-13T16:25:32Z", "url": "https://sigmoid.social/@lysander07/114501453902259800", "attributedTo": "https://sigmoid.social/users/lysander07", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://sigmoid.social/users/lysander07/followers", "https://wisskomm.social/users/fiz_karlsruhe", "https://sigmoid.social/users/fizise", "https://fedihum.org/users/tabea", "https://sigmoid.social/users/enorouzi", "https://fedihum.org/users/sourisnumerique" ], "sensitive": false, "atomUri": "https://sigmoid.social/users/lysander07/statuses/114501453902259800", "inReplyToAtomUri": null, "conversation": "tag:sigmoid.social,2025-05-13:objectId=57581719:objectType=Conversation", "content": "<p>Last week, our students learned how to conduct a proper evaluation for an NLP experiment. To this end, we introduced a small textcorpus with sentences about Joseph Fourier, who counts as one of the discoverers of the greenhouse effect, responsible for global warming.</p><p><a href=\"https://github.com/ISE-FIZKarlsruhe/ISE-teaching/blob/b72690d38911b37748082256b61f96cf86171ace/materials/dataset/fouriercorpus.txt\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/ISE-FIZKarlsruhe/IS</span><span class=\"invisible\">E-teaching/blob/b72690d38911b37748082256b61f96cf86171ace/materials/dataset/fouriercorpus.txt</span></a></p><p><a href=\"https://sigmoid.social/tags/ise2025\" class=\"mention hashtag\" rel=\"tag\">#<span>ise2025</span></a> <a href=\"https://sigmoid.social/tags/nlp\" class=\"mention hashtag\" rel=\"tag\">#<span>nlp</span></a> <a href=\"https://sigmoid.social/tags/lecture\" class=\"mention hashtag\" rel=\"tag\">#<span>lecture</span></a> <a href=\"https://sigmoid.social/tags/climatechange\" class=\"mention hashtag\" rel=\"tag\">#<span>climatechange</span></a> <a href=\"https://sigmoid.social/tags/globalwarming\" class=\"mention hashtag\" rel=\"tag\">#<span>globalwarming</span></a> <a href=\"https://sigmoid.social/tags/historyofscience\" class=\"mention hashtag\" rel=\"tag\">#<span>historyofscience</span></a> <a href=\"https://sigmoid.social/tags/climate\" class=\"mention hashtag\" rel=\"tag\">#<span>climate</span></a> <span class=\"h-card\" translate=\"no\"><a href=\"https://wisskomm.social/@fiz_karlsruhe\" class=\"u-url mention\">@<span>fiz_karlsruhe</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://sigmoid.social/@fizise\" class=\"u-url mention\">@<span>fizise</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://fedihum.org/@tabea\" class=\"u-url mention\">@<span>tabea</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://sigmoid.social/@enorouzi\" class=\"u-url mention\">@<span>enorouzi</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://fedihum.org/@sourisnumerique\" class=\"u-url mention\">@<span>sourisnumerique</span></a></span></p>", "contentMap": { "en": "<p>Last week, our students learned how to conduct a proper evaluation for an NLP experiment. To this end, we introduced a small textcorpus with sentences about Joseph Fourier, who counts as one of the discoverers of the greenhouse effect, responsible for global warming.</p><p><a href=\"https://github.com/ISE-FIZKarlsruhe/ISE-teaching/blob/b72690d38911b37748082256b61f96cf86171ace/materials/dataset/fouriercorpus.txt\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://</span><span class=\"ellipsis\">github.com/ISE-FIZKarlsruhe/IS</span><span class=\"invisible\">E-teaching/blob/b72690d38911b37748082256b61f96cf86171ace/materials/dataset/fouriercorpus.txt</span></a></p><p><a href=\"https://sigmoid.social/tags/ise2025\" class=\"mention hashtag\" rel=\"tag\">#<span>ise2025</span></a> <a href=\"https://sigmoid.social/tags/nlp\" class=\"mention hashtag\" rel=\"tag\">#<span>nlp</span></a> <a href=\"https://sigmoid.social/tags/lecture\" class=\"mention hashtag\" rel=\"tag\">#<span>lecture</span></a> <a href=\"https://sigmoid.social/tags/climatechange\" class=\"mention hashtag\" rel=\"tag\">#<span>climatechange</span></a> <a href=\"https://sigmoid.social/tags/globalwarming\" class=\"mention hashtag\" rel=\"tag\">#<span>globalwarming</span></a> <a href=\"https://sigmoid.social/tags/historyofscience\" class=\"mention hashtag\" rel=\"tag\">#<span>historyofscience</span></a> <a href=\"https://sigmoid.social/tags/climate\" class=\"mention hashtag\" rel=\"tag\">#<span>climate</span></a> <span class=\"h-card\" translate=\"no\"><a href=\"https://wisskomm.social/@fiz_karlsruhe\" class=\"u-url mention\">@<span>fiz_karlsruhe</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://sigmoid.social/@fizise\" class=\"u-url mention\">@<span>fizise</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://fedihum.org/@tabea\" class=\"u-url mention\">@<span>tabea</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://sigmoid.social/@enorouzi\" class=\"u-url mention\">@<span>enorouzi</span></a></span> <span class=\"h-card\" translate=\"no\"><a href=\"https://fedihum.org/@sourisnumerique\" class=\"u-url mention\">@<span>sourisnumerique</span></a></span></p>" }, "attachment": [ { "type": "Document", "mediaType": "image/png", "url": "https://cdn.masto.host/sigmoidsocial/media_attachments/files/114/501/436/659/518/330/original/dc689a1ddd8371ac.png", "name": "Slide of the Information Service ENgineering lecture 03, Natural Language Processing 02, section 2.6: Evaluation, Precision, and Recall\nHeadline: Experiment\nLet's consider the following text corpus (FOURIERCORPUS):\n 1\nIn 1807, Fourier's work on heat transfer laid the foundation for understanding the greenhouse effect.\n2\nJoseph Fourier's energy balance analysis showed atmosphere's heat-trapping role.\n3\nFourrier's calculations, though rudimentary, suggested that the atmosphere acts as an insulator.\n4\nFourier’s greenhouse effect explains how atmospheric gases influence global temperatures.\n5\nJean-Baptiste Joseph Fourier's mathematical treatment of heat flow is essential to climate modeling.\n6\nClimate science acknowledges that Fourier helped to understand the atmospheric absorption of heat.\n7\nClimate change origins often cite Fourier's mathematical work on radiative heat.\n8\nJ. Fourier published his \"Analytical theory of heat\" in 1822.\n9\nFourier analysis is used in signal processing.\n10\nFourier series are key in heat conduction math.\n11\nFourier and related algebras occur naturally in the harmonic analysis of locally compact groups.\n12\nThe Fourier number is the ratio of time to a characteristic time scale for heat diffusion.\n\nThe corpus is available at https://github.com/ISE-FIZKarlsruhe/ISE-teaching/blob/b72690d38911b37748082256b61f96cf86171ace/materials/dataset/fouriercorpus.txt\n\nOn the right side in the background is a portrait engraving of Joseph Fourier\n", "blurhash": "USPst{_NIURj%MM{j[WB-;ofNGRiWBt7M{of", "focalPoint": [ 0, 0 ], "width": 2606, "height": 1460 } ], "tag": [ { "type": "Mention", "href": "https://wisskomm.social/users/fiz_karlsruhe", "name": "@fiz_karlsruhe@wisskomm.social" }, { "type": "Mention", "href": "https://sigmoid.social/users/fizise", "name": "@fizise" }, { "type": "Mention", "href": "https://fedihum.org/users/tabea", "name": "@tabea@fedihum.org" }, { "type": "Mention", "href": "https://sigmoid.social/users/enorouzi", "name": "@enorouzi" }, { "type": "Mention", "href": "https://fedihum.org/users/sourisnumerique", "name": "@sourisnumerique@fedihum.org" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/ise2025", "name": "#ise2025" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/nlp", "name": "#nlp" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/lecture", "name": "#lecture" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/climatechange", "name": "#climatechange" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/globalwarming", "name": "#globalwarming" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/historyofscience", "name": "#historyofscience" }, { "type": "Hashtag", "href": "https://sigmoid.social/tags/climate", "name": "#climate" } ], "replies": { "id": "https://sigmoid.social/users/lysander07/statuses/114501453902259800/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://sigmoid.social/users/lysander07/statuses/114501453902259800/replies?only_other_accounts=true&page=true", "partOf": "https://sigmoid.social/users/lysander07/statuses/114501453902259800/replies", "items": [] } }, "likes": { "id": "https://sigmoid.social/users/lysander07/statuses/114501453902259800/likes", "type": "Collection", "totalItems": 6 }, "shares": { "id": "https://sigmoid.social/users/lysander07/statuses/114501453902259800/shares", "type": "Collection", "totalItems": 2 } }