06 Dec CSC 212 Programming Assignment Developing a Photo Management Application
CSC 212 Programming Assignment Developing a Photo Management Application
College of Computer and Information Sciences King Saud University
Fall 2020
1 Introduction The role of a photo management application is to organize photographs so that they can be easily accessed. In order to help organize photos, the user can provide tags to describe the content of the photos. A tag is a keyword associated with a photo. For example, we can associate the tag ”vacation” to any photo taken during a vacation. In Table 1, you may find some examples of photos and the tags that are used to describe them.
Table 1: Example of photos with associated tags.
hedgehog.jpg animal, hedgehog, apple, grass, green
bear.jpg animal, bear, cub, grass, wind
butterfly1.jpg insect, butterfly, flower, color
butterfly2.jpg insect, butterfly, black, flower
fox.jpg animal, fox, tree, forest, grass
panda.jpg animal, bear, panda, grass
wolf.jpg animal, wolf, mountain, sky, snow, cloud
raccoon.jpg animal, raccoon, log, snow
1
The photo manager organizes the photos into albums created by the user. An album is identified by a unique name and regroups photos that satisfy certain conditions. For the purpose of this assignment, the conditions used to create albums consist in a sequence of tags separated by ”AND”:
Tag1 AND Tag2 AND Tag3
Photos that contain all specified tags will appear in the album. An empty tag list matches all photos.
Example 1. Using the photos of Table 1, the album with the condition bear, will con- tain two photos (that of the panda and the grizzly bear). The album with the condition animal AND grass will contain four photos (hedgehog, grizzly bear, fox and panda). The albbum with no tags will contain all eight photos.
2 Inverted index In order to accelerate the search for photos, it is possible to store the tags in an inverted index. The idea is that instead of having the photos point to the tags, the inverted index will store all the tags, and each tag will point to all the photos that contain it.
The following is an example showing a partial inverted index for the photos shown above:
animal → hedgehog.jpg, bear.jpg, fox.jpg, panda.jpg, wolf.jpg, racoon.jpg apple → hedgehog.jpg bear → bear.jpg, panda.jpg black → butterfly2.jpg butterfly → butterfly1.jpg, butterfly2.jpg …
You are required to:
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