A Look at Automatic Image Tagging Services
Supplementary material

Microsoft: outdoor (0.997), tree (0.996), flower (0.995), sky (0.982), building (0.919), garden (0.546), plant (0.429)

Clarifai: city (0.991), architecture (0.991), building (0.991), no person (0.99), skyscraper (0.976), office (0.961), cityscape (0.957), travel (0.955), outdoors (0.955), downtown (0.954)

Imagga: city (1.0), architecture (0.931), building (0.826), sky (0.715), urban (0.666), travel (0.586), cityscape (0.555), landmark (0.548), skyline (0.514), tower (0.483)

Algorithmia: no humans (0.735), sky (0.422), cloud (0.421), tree (0.261)

Google: city (0.853), flower (0.835), landmark (0.834), human settlement (0.777), skyline (0.726), tourism (0.656), downtown (0.607), cityscape (0.592), tower (0.567), park (0.557)

Microsoft: indoor (0.959), food (0.89), bread (0.826)

Clarifai: bread (0.994), no person (0.99), food (0.989), wheat (0.971), breakfast (0.96), loaf (0.958), bakery (0.934), baking (0.927), cereal (0.91), flour (0.905)

Imagga: bread (1.0), food (0.708), loaf of bread (0.615), baked goods (0.468), french loaf (0.363), breakfast (0.328), bakery (0.326), starches (0.287), baked (0.285), bun (0.283)

Algorithmia: photo (0.985), no humans (0.615)

Google: food (0.942), rye bread (0.901), baked goods (0.829), grass family (0.76), bread (0.741), sourdough (0.644), brown bread (0.636), sliced bread (0.63), beer bread (0.622), baking (0.61)

Microsoft: sky (0.999), outdoor (0.919)

Clarifai: people (0.978), watercraft (0.975), no person (0.955), water (0.952), transportation system (0.941), outdoors (0.939), recreation (0.935), travel (0.92), vehicle (0.914), adult (0.904)

Imagga: boat (1.0), vessel (0.791), sea (0.747), water (0.731), ocean (0.661), ship (0.61), sky (0.516), travel (0.493), vacation (0.401), sun (0.376)

Algorithmia: sky (0.469), cloud (0.427), 1girl (0.343), solo (0.3)

Google: vehicle (0.917), boat (0.877), watercraft (0.696), sea (0.682), ship (0.585)

Microsoft: dark (0.445)

Clarifai: moon (1.0), astronomy (0.999), Luna (0.995), planet (0.99), eclipse (0.99), no person (0.983), orbit (0.982), lunar (0.982), solar system (0.982), telescope (0.981)

Imagga: satellite (1.0), planet (0.939), globe (0.802), world (0.751), earth (0.75), space (0.627), impact (0.554), global (0.524), stars (0.521), sphere (0.477)

Algorithmia: no humans (0.714), solo (0.31)

Google: moon (0.945), black and white (0.903), astronomical object (0.822), atmosphere (0.738), astronomy (0.662), monochrome (0.579), outer space (0.552), circle (0.54), monochrome photography (0.538)

Microsoft: indoor (0.981), shelf (0.705)

Clarifai: shelf (0.998), ceramic (0.997), container (0.996), stock (0.995), no person (0.992), market (0.981), ceramic (0.98), indoors (0.978), earthenware (0.976), clay (0.973)

Imagga: shop (1.0), home (0.978), furniture (0.733), interior (0.689), counter (0.665), mercantile establishment (0.608), house (0.606), case (0.593), shoe shop (0.559), building (0.549)

Algorithmia: photo (0.466)

Google: room (0.86), furniture (0.846), shelf (0.792), shelving (0.75), home (0.637), wood (0.619), cabinetry (0.614), interior design (0.585)

Microsoft: outdoor (1.0), sky (0.999), flying (0.989), aircraft (0.949), transport (0.933), plane (0.914), airplane (0.877), cloudy (0.728), jet (0.51), clouds (0.425)

Clarifai: airplane (0.999), aircraft (0.999), flight (0.998), sky (0.996), air (0.993), no person (0.989), daylight (0.986), fly (0.984), outdoors (0.979), action (0.975)

Imagga: bird (1.0), kite (0.701), hawk (0.585), sky (0.434), animal (0.355), albatross (0.338), flying (0.335), wildlife (0.321), fly (0.318), flight (0.308)

Algorithmia: no humans (0.461), sky (0.431), cloud (0.268), 1girl (0.266), water (0.265), solo (0.227)

Google: sky (0.979), airplane (0.866), aircraft (0.834), flight (0.803), atmosphere of earth (0.802), cloud (0.738), aviation (0.733), vehicle (0.732), air force (0.69), air show (0.606)

Microsoft: outdoor (1.0), sky (1.0), water (0.999), river (0.802), lake (0.546), day (0.151)

Clarifai: water (0.99), river (0.989), travel (0.986), no person (0.986), architecture (0.986), sky (0.979), city (0.972), bridge (0.957), outdoors (0.955), tower (0.941)

Imagga: tower (1.0), sky (0.661), structure (0.562), architecture (0.547), travel (0.5), building (0.457), city (0.406), tourism (0.399), clouds (0.383), water (0.366)

Algorithmia: no humans (0.617), sky (0.549), cloud (0.461), tree (0.272), nature (0.211)

Google: landmark (0.858), vehicle (0.78), tower (0.722), sea (0.705), boat (0.64), reflection (0.603), bay (0.602), waterway (0.523), dock (0.517), marina (0.509)

Microsoft: outdoor (1.0), grass (1.0), sky (1.0), mountain (0.996), nature (0.905), field (0.837), hill (0.827), grassy (0.74), overlooking (0.62), tall (0.598)

Clarifai: landscape (0.998), sky (0.991), mountain (0.989), nature (0.984), travel (0.975), field (0.971), tree (0.964), grass (0.962), hill (0.958), fog (0.954)

Imagga: plain (1.0), landscape (0.745), land (0.624), sky (0.572), grass (0.566), highland (0.533), field (0.488), summer (0.437), clouds (0.434), countryside (0.396)

Algorithmia: no humans (0.747), sky (0.594), cloud (0.417)

Google: habitat (0.965), mountainous landforms (0.955), geographical feature (0.895), grassland (0.878), atmospheric phenomenon (0.869), wilderness (0.864), plain (0.862), mountain (0.856), natural environment (0.854), ecosystem (0.838)

Microsoft: text (0.924), abstract (0.72)

Clarifai: people (0.999), art (0.993), one (0.989), print (0.984), portrait (0.982), illustration (0.976), adult (0.976), painting (0.976), engraving (0.959), man (0.939)

Imagga: drawing (1.0), sketch (0.562), design (0.308), tattoo (0.29), representation (0.281), decoration (0.201), painting (0.197), art (0.189), black (0.16), graphic (0.151)

Algorithmia: monochrome (0.876), solo (0.519), 1girl (0.507), traditional media (0.489), photo (0.342)

Google: black and white (0.909), sketch (0.792), drawing (0.78), figure drawing (0.738), art (0.667), monochrome (0.616), monochrome photography (0.584), illustration (0.548)

Microsoft: floor (0.999), cat (0.994), indoor (0.985), mammal (0.732), grey (0.593), gray (0.565), domestic cat (0.469), hard (0.423)

Clarifai: mammal (0.988), one (0.973), cat (0.973), pet (0.972), animal (0.955), no person (0.952), portrait (0.948), cute (0.944), sit (0.922), domestic (0.912)

Imagga: cat (1.0), animal (0.922), black (0.841), feline (0.821), standard poodle (0.792), domestic animal (0.756), egyptian cat (0.737), home (0.685), domestic (0.67), poodle (0.633)

Algorithmia: photo (0.984), no humans (0.368), solo (0.285)

Google: cat (0.96), mammal (0.929), vertebrate (0.913), small to medium sized cats (0.645), cat like mammal (0.55), kitten (0.514)