| |
| (function(root){ |
| function create(type){ |
| const points=[]; |
| const add=(x,y,label)=>points.push({x,y,label}); |
| if(type==='xor') return [ |
| {x:0.1,y:0.9,label:-1},{x:0.9,y:0.1,label:-1}, |
| {x:0.1,y:0.1,label:1},{x:0.9,y:0.9,label:1}, |
| ]; |
| if(type==='two_moons') for(let i=0;i<36;i++){ |
| const t=i/35*Math.PI; |
| add(.36+.28*Math.cos(t),.49+.28*Math.sin(t),-1); |
| add(.64+.28*Math.cos(t),.51-.28*Math.sin(t),1); |
| } |
| if(type==='circles') for(let i=0;i<60;i++){ |
| const t=i/60*2*Math.PI; |
| for(const [r,label] of [[.18,-1],[.38,1]]) add(.5+r*Math.cos(t),.5+r*Math.sin(t),label); |
| } |
| if(type==='blobs'){ |
| |
| let seed=42; |
| const random=()=>{seed=(Math.imul(1664525,seed)+1013904223)>>>0;return (seed+.5)/4294967296;}; |
| for(const [cx,cy,label] of [[.25,.3,-1],[.75,.3,1],[.5,.75,2]]) for(let i=0;i<40;i++){ |
| const r=.065*Math.sqrt(-2*Math.log(random())),t=2*Math.PI*random(); |
| add(Math.max(.02,Math.min(.98,cx+r*Math.cos(t))),Math.max(.02,Math.min(.98,cy+r*Math.sin(t))),label); |
| } |
| } |
| if(type==='spirals') for(let i=0;i<70;i++){ |
| const r=.04+.4*i/69,t=i/69*2*Math.PI; |
| add(.5+r*Math.cos(t),.5+r*Math.sin(t),-1); |
| add(.5-r*Math.cos(t),.5-r*Math.sin(t),1); |
| } |
| return points; |
| } |
| const api={create}; |
| if(typeof module!=='undefined')module.exports=api;else root.Datasets=api; |
| })(globalThis); |
|
|
