29:null 2a:["$","title",null,{"children":"Object-Centric Social Network based on MSCOCO Dataset | janetyc | Observable"}] 2f:T532,md`# Object-Centric Social Network based on MSCOCO Dataset #### Data #### Social Networw Construction - we build a global social network by calculating co-occurence among objects in the data. #### Individual Object-Centric Social Network - we used "spreading activiation" to extract individual social network with a energy threshold (t=0.04) from the global social network (8 nodes). - we identify 10 specific objects: "person", "chair", "cell phone", "toaster", "kettle"(x), "bottle", "oven", "toilet", "refrigerator", "clock". #### Results object/num of images/num of neighborhood/num of distinct neighborhood
person: 60
chair: 62
cell phone: 58
toaster: 44
bottle: 61
oven: 55
toilet: 53
refrigerator: 55
clock: 55
#### Visualization: Radial Tidy Tree D3’s [tree layout](https://github.com/d3/d3-hierarchy/blob/master/README.md#tree) implements the [Reingold–Tilford “tidy” algorithm](http://reingold.co/tidier-drawings.pdf) for constructing hierarchical node-link diagrams, improved to run in linear time by [Buchheim *et al.*](http://dirk.jivas.de/papers/buchheim02improving.pdf) Tidy trees are typically more compact than [cluster dendrograms](/@d3/radial-dendrogram), which place all leaves at the same level. See also the [Cartesian variant](/@d3/tidy-tree).`30:T549,chart = { const root = tree(data); const svg = d3.create("svg"); svg.append("g") .attr("fill", "none") .attr("stroke", "#555") .attr("stroke-opacity", 0.4) .attr("stroke-width", 1.5) .selectAll("path") .data(root.links()) .join("path") .attr("d", d3.linkRadial() .angle(d => d.x) .radius(d => d.y)); svg.append("g") .selectAll("circle") .data(root.descendants()) .join("circle") .attr("transform", d => ` rotate(${d.x * 180 / Math.PI - 90}) translate(${d.y},0) `) .attr("fill", d => d.children ? "#555" : "#999") .attr("r", 2.5); svg.append("g") .attr("font-family", "sans-serif") .attr("font-size", 10) .attr("stroke-linejoin", "round") .attr("stroke-width", 3) .selectAll("text") .data(root.descendants()) .join("text") .attr("transform", d => ` rotate(${d.x * 180 / Math.PI - 90}) translate(${d.y},0) rotate(${d.x >= Math.PI ? 180 : 0}) `) .attr("dy", "0.31em") .attr("x", d => d.x < Math.PI === !d.children ? 6 : -6) .attr("text-anchor", d => d.x < Math.PI === !d.children ? 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