SYSTEM AND METHOD FOR INFORMATION SEEKING IN A MULTIMEDIA COLLECTION
First Claim
1. A computer-implemented method for information seeking in a multimedia collection of objects comprising:
- through a graphical user interface, providing for a user to select a subset of objects from a multimedia collection, at least some of the objects in the collection comprising first and second modalities;
displaying representations of objects in the subset on a local map;
at each of a plurality of iterations;
providing for the user to annotate a modality of an object represented in the local map with a relevance label, whereby an object'"'"'s first modality and second modality are able to be labeled independently;
optionally, providing for the user to select at least one of the first and second modalities;
optionally, providing for the user to select a forgetting factor for at least one of the first and second modalities;
optionally, providing for the user to select a locality factor for at least one annotated object;
with a computer processor, computing relevance scores for unlabeled objects in the collection, each relevance score taking into account labels applied to other objects, computed similarity measures between the unlabeled object and the other objects in the collection, and optionally, at least one of;
the user selected at least one modality,the locality factor; and
the forgetting factor, the forgetting factor affecting a weight applied to at least some of the labeled objects based on the iteration in which the label was applied;
modifying the local map based on the computed relevance scores; and
displaying the modified local map on a visual display.
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Abstract
An apparatus and method facilitate combined query based searching with serendipitous browsing in a multimedia collection. A user selects objects to label from a local map, which may include representations of objects retrieved from the collection as being responsive to a text or image base query. The text and image portions of the object can be independently labeled. Unlabeled objects are scored and ranked based on the applied labels of labeled objects, which may take into account cross-media pseudo-relevance and user selectable (or default) parameters, such as a forgetting factor, which tends to place greater weight on more recently labeled objects, and a modality parameter, which laces greater weight on the modality (text, image, or hybrid) currently selected by the user. The local map is modified, based on the ranking, optionally after reranking of objects to improve the diversity of the displayed objects.
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Citations
25 Claims
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1. A computer-implemented method for information seeking in a multimedia collection of objects comprising:
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through a graphical user interface, providing for a user to select a subset of objects from a multimedia collection, at least some of the objects in the collection comprising first and second modalities; displaying representations of objects in the subset on a local map; at each of a plurality of iterations; providing for the user to annotate a modality of an object represented in the local map with a relevance label, whereby an object'"'"'s first modality and second modality are able to be labeled independently; optionally, providing for the user to select at least one of the first and second modalities; optionally, providing for the user to select a forgetting factor for at least one of the first and second modalities; optionally, providing for the user to select a locality factor for at least one annotated object; with a computer processor, computing relevance scores for unlabeled objects in the collection, each relevance score taking into account labels applied to other objects, computed similarity measures between the unlabeled object and the other objects in the collection, and optionally, at least one of; the user selected at least one modality, the locality factor; and the forgetting factor, the forgetting factor affecting a weight applied to at least some of the labeled objects based on the iteration in which the label was applied; modifying the local map based on the computed relevance scores; and displaying the modified local map on a visual display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for information seeking in a multimedia collection of objects comprising:
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memory which stores a multimedia collection of objects, at least some of the objects in the collection comprising first and second modalities, and stores similarity matrices for the objects in the collection for each of the first and second modalities; a graphical user interface which is configured for displaying a global map and a local map of objects in the multimedia collection, the local map including representations of a subset of the objects in the multimedia collection, the graphical user interface configured for inputting parameters for relevance scoring selected from a modality parameter, a locality parameter, and a forgetting factor parameter, and inputting relevance labels for objects, whereby an object'"'"'s first modality and second modality are able to be labeled independently; a ranking component which computes relevance scores for unlabeled objects in the collection based on labels applied to other objects, the selected parameters, the similarity matrices; and a graph layout component for modifying the local map based on the computed relevance scores. - View Dependent Claims (22, 23, 24)
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25. A method which allows serendipitous browsing and query based search of a multimedia collection, the method comprising:
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storing a multimedia collection of objects in computer-readable memory; storing similarity matrices for text portions and image portions of the objects in the collection in computer-readable memory; receiving an input user query selected from a text query, an image query, and a combination thereof; retrieving a subset of the objects in the collection, based on the user query, and displaying representations of the retrieved objects in the subset in a two-dimensional local map on a display; providing access to an underlying object of a user-selected object representation displayed in the local map; providing for the user to label at least one of the text part and the image part of the selected object with a relevance label, whereby the image part and text part of a multimedia object are able to be independently labeled with different relevance labels; computing relevance scores for unlabeled objects in the collection, each relevance score being a function of user-applied relevance labels to other objects in the collection and respective similarity measures retrieved from the similarity matrices; optionally reranking the relevance scores to increase diversity; and modifying the local map based on the optionally reranked relevance scores.
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Specification