The aim of this presentation is to review some of the standards, connected with multimedia and their metadata. We start with MPEG family and continue with Open Standards for Interactive TV. Efficient video-streaming is presented. Some... more
This blog post introduces a baby spin structure for 3D space.
The main goal of this paper it is to present our experiments in ImageCLEF 2011 Campaign (Medical Retrieval Task). This edition we use textual and visual information, based on the assumption that the textual module better captures the... more
Video is a massive amount of data that contains complex interactions between moving objects. The extraction of knowledge from this type of information creates a demand for video analytics systems that uncover statistical relationships... more
Users are generally interested in the edge-ranked section of returning search results, according to an analysis of click-through data from a very big search engine log. As a result, search engines must achieve great accuracy with... more
The indexing and retrieval of multimedia items is difficult due to the semantic gap between the user's perception of the data and the descriptions we can derive automatically from the data using computer vision, speech recognition, and... more
This paper deals with multimedia information access. We propose two new approaches for hybrid text-image information processing that can be straightforwardly generalized to the more general multimodal scenario. Both approaches fall in the... more
Abstract. XML processing models and respective languages do not reflect the separation of concerns needed in complex XML applications maintenance. As content complexity grows, there is a need for higher abstraction levels on XML... more
A fundamental problem in image retrieval is how to improve the text-based retrieval systems, which is known as "bridging the semantic gap". The reliance on visual similarity for judging semantic similarity may be problematic due to the... more
This paper presents an overview of the ImageCLEF 2019 lab, organized as part of the Conference and Labs of the Evaluation Forum-CLEF Labs 2019. ImageCLEF is an ongoing evaluation initiative (started in 2003) that promotes the evaluation... more
In this work, we outline the submissions of Dublin City University (DCU) team, the organisers, to the NTCIR-13 Lifelog-2 Task. We submitted runs to the Lifelog Semantics Access (LSAT) and the Lifelog Insight (LIT) sub-tasks.
Content-based image retrieval systems were introduced as an alternative to avoid the need of manual tagging in traditional keyword-based image retrieval systems. However, the representation of image using visual features only involves a... more
YOLUM, PINAR. Properties of Referral Networks: Emergence of Authority and Trust (Under the direction of Munindar P. Singh). Developing, maintaining, and disseminating trust in open environments is crucial. We develop a decentralized... more
Since 3D models are becoming more popular, the need for effective methods capable of retrieving 3D models are becoming crucial. Current methods require an example 3D model as query. However, in many cases, such a query is not easy to get.... more
In the field of multimedia retrieval in video, text frame classification is essential for text detection, event detection, event boundary detection etc. We propose a new text frame classification method that introduces a combination of... more
Recommender systems have been systematically applied in industry and academia to help users cope with information uncertainty. However, given the multiplicity of the preferences and needs it has been shown that no approach is suitable for... more
This paper tries to solve the problem of query generation from multiple media examples, e.g. images, by exploiting a media document representation called feature terms. A feature term denotes a continuous interval of a media feature. This... more
Although IP-multicast has been proposed and investigated for years, there are major problems inherent in the IP-multicasting technique, e.g., difficulty to scale up the system, difficulty in allocating a globally unique multicast address,... more
Research on multimedia information retrieval (MIR) has recently witnessed a booming interest. A prominent feature of this research trend is its simultaneous but independent materialization within several fields of computer science. The... more
In edge-covering problem the goal is finding the minimum number of guards to cover the edges of a simple polygon. This problem is N P-hard, and to our knowledge there is just one approximation algorithm for a restricted case of this... more
The aim of this paper is to define a Clifford Fourier transform that is suitable for color image spectral analysis. There have been many attempts to define such a transformation using quaternions or Clifford algebras. We focus here on a... more
![Fig. 2 The Clifford-Fourier transform Ho, e1e4 Fig. 1 shows the original images used for these experiments!. Fig. 1(a) H is a mod- ified color version of the Fourier house containing red, desatured red, green, cyan stripes in various directions, a uniform red circle and a red square with lower lumi- nance. Fig. 1(b) F is a natural image taken from the Berkeley image segmentation database [10].](https://figures.academia-assets.com/112093866/figure_002.jpg)
Visual notations based on customized entity relationship and basic UML class diagram paradigm of classes, associations and attributes are successfully used in data modeling and data querying alike, both in relational database and in... more
![Figure 2. Select top 10 most expensive hospital episodes, show episode length in days, total cost and case record number, together with patient name and surname, as well as name and sur- name of referring physician, if specified. Figure 2 shows an example visual query and its translation into SPARQL. The query is based on three related classes, a mandatory link (HospitalEpisode -> Patient) and an optional link to CPhysician. The attributes are by default assumed to be optional, not to bypass entire solution rows because of missing attribute values (this contrasts [13,4]).](https://figures.academia-assets.com/111745383/figure_002.jpg)
![property name creates the SPARQL query variable with the same name, uses it within the query just as the class or property name, then adds it to the query output. Fig. 14 shows examples of exploratory queries over a SPARQL endpoint in the visual notation, re-worked and extended from [4]: (a) select all classes together with their instance count, (b) select all properties together with all class pairs connected by them (select distinct specification is necessary since the raw data graph is computed on data instance level); (c,d) two forms of selecting all triples from the data set (in (d) ‘a’ denotes the “current instance”, p — the property, ‘b’ — the “target instance”; {+} marks a required triple presence); (e,f) select all properties together with their usage count (in (f) the triple has to be marked as required by {+} as well as by {internal} not to have its re- sulting value included in the selection set); (g) if an explicit query variable is introduced within a subquery, a reference to it within an enclosing query is to be made by the variable name without the preceding variable mark ‘?’. The visual notation has not been designed specifically to ease the formulation of the exploratory queries, Fig. 14 just shows the possibility and options for exploratory que- ries in the visual notation, outlining also the usage variability of the notation constructs (e.g. using query nodes with empty class names or with no content at all).](https://figures.academia-assets.com/111745383/figure_009.jpg)
We present a novel multimodal query expansion strategy, based on genetic programming (GP), for image search in visually-oriented e-commerce applications. Our GP-based approach aims at both: learning to expand queries with multimodal... more
The UNED-UV group at the ImageCLEF2013 Campaign have participated in the Scalable Concept Image Annotation subtask. We present a multimedia IR-based system for the annotation task. In this collection, the images do not have any textual... more
In this work, we describe the approach proposed by the RECOD team for the Placing Task, Locale-based sub-task, at MediaEval 2015. Our approach is based on the use of as much evidence as possible (textual, visual, and/or audio descriptors)... more
This paper describes the different experiments that have been conducted by the MRIM group at the LIG in Grenoble for the ImageCLEF 2009 campaign. The group participated in the following tasks: Image Retrieval and Image Annotation. For the... more
The purpose of the present paper is to derive some inclusion properties and argument estimates of certain normalized analytic functions in the open unit disk, which are defined by means of a class of multiplier transformations.... more
Semantic search or text-to-video search in video is a novel and challenging problem in information and multimedia retrieval. Existing solutions are mainly limited to text-to-text matching, in which the query words are matched against the... more
Assessing the value of individual users' contributions in peer-production systems is paramount to the design of mechanisms that support collaboration and improve users' experience. For instance, to incentivize contributions, file-sharing... more
Fundamental to the theory of joint signal representations is the idea of associating a variable, such as time or frequency, with an operator, a concept borrowed from quantum mechanics. Each variable can be associated with a Hermitian... more
Balltrees are simple geometric data structures with a wide range of practical applica tions to geometric •learning tasks. In this report we compare 5 different algorithms for. constructing ball trees from data. We study the trade-off... more
A note on the paper: Solving the job-shop scheduling problem optimally by dynamic programming. (Research Memorandum; No. 2015-9). Faculty of Economics and Business Administration. General rights Copyright and moral rights for the... more
The aim of this paper is to introduce and to study the space O M,ω (R N) of the multipliers of the space S ω (R N) of the ω-ultradifferentiable rapidly decreasing functions of Beurling type. We determine various properties of the space O... more
Traditional rational motion design describes separately the translation of a reference point in a body and the rotation of the body about it. This means that there is dependence upon the choice of reference point. When considering the... more
This work presents a web lecture systems that allows its users to visualize and re-use aggregated actions taken from user's past interaction for enhanced content navigation and multimedia retrieval.
The aim of this paper is to introduce and to study the space O M,ω (R N) of the multipliers of the space S ω (R N) of the ω-ultradifferentiable rapidly decreasing functions of Beurling type. We determine various properties of the space O... more
The technologies are growing continually and due to this there are a large network of social networking and media collection library is increased. Particularly searching for a video from media libraries on the network has become a... more
The technologies are growing continually and due to this there are a large network of social networking and media collection library is increased. Particularly searching for a video from media libraries on the network has become a... more
Symmetry classes of polynomials associated with the dihedral group .
Content-based multimedia retrieval faces many challenges such as semantic gap, imbalanced data, and varied qualities of the media. Feature selection as a component of the retrieval process plays an important role. The aim of feature... more
Photos are a special way to tell stories of our best memories. The representation of those photos in appealing physical photo books is highly appreciated by many people. Today, many photos are shared via social networking sites, where... more
Photos are a special way to tell stories of our best memories and moments. The representation of those photos in appealing physical photo books is highly appreciated by many people. Today, many photos are shared via social networking... more
We present an algebraically extended 2D image representation in this paper. In order to obtain more degrees of freedom, a 2D image is embedded into a certain geometric algebra. Combining methods of differential geometry, tensor algebra,... more
We achieve compositions rules for the geometric parameters of the composed rotations, which is in a certain sense analogous to the well known Rodrigues formula. We also obtain a necessary and sufficient condition for a composition of two... more
Much of today's success in Information Retrieval (IR) comes from a hard approach: employing blazingly fast machines, ever more refined statistics, and increasingly powerful classification schemes. In recent years, however, the hard... more
This paper describes our e-librarian service that understands students' complete questions in natural language and retrieves very few but pertinent learning objects, i.e., short multimedia documents. The system is based on three key... more