[{"data":1,"prerenderedAt":254},["ShallowReactive",2],{"project-24370792":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":28,"sentiment":29,"stance_mix":30,"scored_comments":35,"aspects":36,"strip":41,"post_text":44,"what":45,"said":65,"maker_in_thread":117,"shape":127,"grid":131,"attempts":206,"same_week":214,"maker_shows":245,"maker_hidden":246,"reader_version":247,"card":248},"24370792","perceptronCobol","Single neuron neural network written in COBOL","title","Show HN: Single neuron neural network written in COBOL","https:\u002F\u002Fgithub.com\u002Fvictorqribeiro\u002FperceptronCobol","github.com","atum47",1599181964,2020,94,30,687,3028,23,"notable","ai","neural network demo","other",[24,25,26,27],"perceptron","cobol","neural network","single neuron","curious",0.143,{"positive":31,"neutral":32,"mixed":33,"critical":34},2,4,0,1,7,{"execution":37,"docs":38,"idea":39,"design":40},{"positive":33,"critical":34},{"positive":33,"critical":33},{"positive":34,"critical":33},{"positive":34,"critical":33},[33,33,33,42,33,33,42,34,33,43,33,42,33,33,33,33,43,42,33,33,33,33,33,33,33,33,33,33,33,33],3,5,null,{"problem":46,"audience":44,"pricing":44,"motivation":53,"time_to_build":44,"stack":57,"openness":64,"stage":64,"team_size":64},{"value":47,"source":48,"evidence":49},"Shows how a perceptron classifier can be written in COBOL","maker",[50],{"id":51,"by":11,"text":52},"24370807","Hi everyone, I made this a while ago just for fun. Perceptron was one of the first algorithms I wrote back in college when I was taking machine learning classes. So I thought how…",{"value":54,"source":48,"evidence":55},"Made for fun, combining an early algorithm with old technology",[56],{"id":51,"by":11,"text":52},[58],{"value":59,"source":48,"evidence":60},"COBOL",[61,63],{"id":62},"post",{"id":51,"by":11,"text":52},"unknown",{"praise":66,"objections":83,"requests":97,"questions":98,"alternatives":106},[67,79],{"value":68,"source":69,"evidence":70},"Readable code; COBOL is easy to follow","commenter",[71,75],{"id":72,"by":73,"text":74},"24371931","klyrs","I was taken with how readable it is, personally. I'd say \"like python but next level\" but I know at least that much history.",{"id":76,"by":77,"text":78},"24370903","canjobear","This is really cool! It's great to see a simple but nontrivial program to get a feel for how a language like this works. Reading through and knowing no COBOL, it looks like this…",{"value":80,"source":69,"evidence":81},"Cool to see a nontrivial COBOL program",[82],{"id":76,"by":77,"text":78},[84,91],{"value":85,"source":69,"evidence":86},"Perceptron uses a step activation, not a sigmoid",[87],{"id":88,"by":89,"text":90},"24371225","__palo_alto__","I think the perceptron algorithm does not include a sigmoid, just a stepwise activation. https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPerceptron",{"value":92,"source":48,"evidence":93},"Code is not idiomatic COBOL",[94],{"id":95,"by":11,"text":96},"24371347","yeah, please don't take this code like is good COBOL code, haha, I learned it just for this experiment.",[],[99],{"value":100,"source":69,"evidence":101},"What do the COBOL data declarations like PIC S99V9999 mean",[102],{"id":103,"by":104,"text":105},"24371134","im3w1l","When classifying it's often a good idea to feed the prediction into a sigmoid-function. I have never seen cobol code before, only heard about it so thanks for posting some. What…",[107],{"value":108,"source":69,"evidence":109},"Micro Focus Visual COBOL",[110,114],{"id":111,"by":112,"text":113},"24374667","pjmlp","Cobol can be actually quite modern. https:\u002F\u002Fwww.microfocus.com\u002Fen-us\u002Fproducts\u002Fvisual-cobol\u002Ffeatures",{"id":115,"by":112,"text":116},"24374679","Many people that bash Cobol aren't aware that the language keeps being improved to follow up on newer trends, https:\u002F\u002Fwww.microfocus.com\u002Fen-us\u002Fproducts\u002Fvisual-cobol\u002Ffeatures…",{"comments":118,"answered":42,"key":119},10,[120,121,124],{"id":51,"text":52},{"id":122,"text":123},"24371114","yeah, when I was writing the comment I remember my teacher telling us that neural networks were invented a long time ago and now (2017 when I took the class) they were coming…",{"id":125,"text":126},"24371162","ERR is the name of my variable \"error\" S indicates that this value is signed 99 is two digits V is a decimal separator and the other 9999 are 4 decimal places…",{"commenters":128,"max_depth":129,"maker_replies":118,"first_comment_mins":42,"lifespan_hours":130},19,6,14,[132,134,138,140,142,144,147,151,153,154,156,158,162,165,169,171,172,174,177,179,182,184,187,190,192,195,197,200,202,205],[51,33,33,133,11,34],"maker\u002Fneutral\u002Fidea",[135,33,33,136,137,33],"24371100","other\u002Fneutral\u002Fnone","ryan_j_naughton",[122,33,33,139,11,34],"maker\u002Fneutral\u002Fnone",[103,33,42,141,104,33],"project\u002Fneutral\u002Fexecution",[125,33,33,143,11,34],"maker\u002Fneutral\u002Fdocs",[145,33,33,136,146,33],"24371262","jecel",[148,33,42,149,150,33],"24371172","project\u002Fneutral\u002Fdocs","bbunix",[88,33,34,152,89,33],"project\u002Fcritical\u002Fexecution",[111,33,33,136,112,33],[76,34,43,155,77,33],"project\u002Fpositive\u002Fidea",[157,34,33,133,11,34],"24370944",[159,34,42,160,161,33],"24372821","project\u002Fneutral\u002Fidea","swebs",[163,31,33,136,164,33],"24371328","klipt",[166,31,33,167,168,33],"24371339","commenter\u002Fneutral\u002Fnone","rovr138",[170,31,33,167,11,34],"24372088",[95,31,33,141,11,34],[72,31,43,173,73,33],"project\u002Fpositive\u002Fdesign",[175,31,42,143,176,33],"24374269","forgotpwd16",[178,31,33,139,11,34],"24375845",[180,31,33,136,181,33],"24371664","zengid",[183,31,33,136,11,34],"24371683",[185,31,33,136,186,33],"24372113","tapland",[188,31,33,136,189,33],"24371778","smabie",[191,31,33,136,11,34],"24371795",[193,31,33,136,194,33],"24372068","wruza",[196,31,33,136,11,34],"24372120",[198,31,33,136,199,33],"24372379","shakna",[201,31,33,136,112,33],"24374699",[203,31,33,136,204,33],"24372045","exdsq",[115,31,33,136,112,33],[207,210,213],{"id":208,"t":209,"points":42,"comments":42},"23358249",1590809526,{"id":211,"t":212,"points":31,"comments":33},"23365147",1590876062,{"id":4,"t":12,"points":14,"comments":15},[215,220,225,230,235,240],{"id":216,"name":217,"points":218,"category":219},"24380969","Linux Upskill Challenge",780,"learning_science",{"id":221,"name":222,"points":223,"category":224},"24422432","Mimestream",403,"productivity",{"id":226,"name":227,"points":228,"category":229},"24381700","Talk",310,"consumer_social",{"id":231,"name":232,"points":233,"category":234},"24407706","Titanoboa",279,"dev_tools",{"id":236,"name":237,"points":238,"category":239},"24370296","typing",237,"creative",{"id":241,"name":242,"points":243,"category":244},"24363493","kiss-orm",220,"languages",53,false,"v2",{"id":249,"name":5,"line":6,"ai":246,"cat":20,"year":13,"points":14,"comments":15,"rec":28,"s":250,"top":18,"kw":251,"maker":11,"domain":10,"tier":19,"attempts":42,"strip":252,"url":9,"mix":253,"praise":68,"objection":85,"sub":21},24370792,0.14,[24,25,26,27],"000300310503000053000000000000",[31,32,33,34],1794036595577]