Özge Alaçam

• PhD
• Research Associate at Bielefeld University

Artificial Intelligence (AI) is ubiquitous in our society and a key driver of economic growth. Intelligent socio-technical systems (ITS) – that means physical artifacts with a specific purpose which have intelligent components at its heart – surround us in the form of intelligent household devices, medical support systems, robotics components in ma...

In primary school, children's books, as well as in modern language learning apps, multi-modal learning strategies like illustrations of terms and phrases are used to support reading comprehension. Also, several studies in educational psychology suggest that integrating cross-modal information will improve reading comprehension. We claim that state-...

Crossmodal interaction in situated language comprehension is important for effective and efficient communication. The relationship between linguistic and visual stimuli provides mutual benefit: While vision contributes, for instance, information to improve language understanding, language in turn plays a role in driving the focus of attention in th...

Incomplete linguistic input, i.e. due to a noisy environment, is one of the challenges that a successful communication system has to deal with. In this paper, we study text completion with a data set composed of sentences with gaps where a successful completion cannot be achieved through a uni-modal (language-based) approach. We present a solution...

Human situated language processing involves the interaction of linguistic and visual processing and this cross-modal integration helps to resolve ambiguities and predict what will be revealed next in an unfolding sentence during spoken communication. However, most state-of-the-art parsing approaches rely solely on the language modality. This paper...

Multi-modal interfaces that provide haptic access to statistical line graphs combined with verbal assistance are proposed as an effective tool to fulfill the needs of visually impaired people. Graphs do not only present data, they also provide and elicit the extraction of second order entities (such as maxima or trends), which are closely linked to...

Haptic–audio interfaces allow haptic exploration of statistical line graphs accompanied by sound or speech, thus providing access to exploration by visually impaired people. Verbally assisted haptic graph exploration can be seen as a task-oriented collaborative activity between two partners, a haptic explorer and an observing assistant, who are dis...

Statistical line graphs are widely used in mul-timodal communication settings and they are crucial elements of learning environments. For visually impaired people, haptic-audio interfaces that provide perceptual access to graph-ical representations seem as an effective tool to fulfill these needs. In an experimental study, we investigated referring...

Statistical graphs are tools for multimodal communication in daily life settings. For visually impaired people, haptic interfaces provide perceptual access to the information provided by the graph. Haptic comprehension can be facilitated by audio and verbal assistance. We investigate the circumstances under which verbal assistance facilitates hapti...

Statistical graphs have been designed for accessible use by visually impaired users. Haptic devices provide an appropriate interface for haptic exploration of statistical graphs. However, haptic exploration of statistical graphs reveals a more local and sequential inspection pattern compared to visual exploration. This difference between haptic exp...

Graphs are successful means to present data, in both tasks that of analyzing and that of communicating data. In addition to text-graph documents, in many professional communication and instruction settings, graphs, language, and often gestures accompany each other forming multimodal communication. In the present study, we investigate referring expr...

Bar graphs and line graphs are commonly used ways of graphical communication. Due to the difference in their perceptual visuo-spatial properties, they facilitate comprehension of different events. Bar graphs are commonly used in the domain of precipitation although the data intrinsically carry information that is averaged over long time spans. In t...

Statistical graphs, such as line graphs are widely used in multimodal communication settings. Language accompanies graphs and humans produce gestures during the course of communication. For visually impaired people, haptic-audio interfaces provide perceptual access to graphical representations. The local and sequential character of haptic perceptio...

In communication settings, statistical graphs accompany language by providing visual access to various aspects of domain entities, such as conveying information about trends. A similar and comparable means for providing perceptual access is to provide haptic graphs for blind people. In this study, we present the results of an experimental study tha...

Line graphs are widely used in communication settings, for conveying information about states and processes that unfold in time. The communication is achieved by the contribution of other modalities than graphs, such as language and gestures. In a set of experimental investigations, we analyzed the production and comprehension of gestures during co...

This study aims to investigate the effects of event type (concepts represented by the graph) in graph comprehension with three graph types (line, bar, area) and two graph designs (linear, round) by means of two different task types (trend assessment, discrete comparison). A novel round graph type was designed for that purpose. Five hypotheses were...

This study presents an analysis of the effect of different graph types on the comprehension of cyclic events. The results indicated that although round and linear graph designs are informationally equivalent, the round graphs are computationally better suited than linear graphs for the interpretation of cyclic concepts.

In this study, we aim to conduct usability tests on different WebMap sites with eye movement analysis. Overall task performance, the effects of iconic representation of information, and the efficiency of pop-up usage were evaluated. The eye tracking technology is used for this study in order to follow the position of the users’ eye-gaze. The result...

An experimental investigation into interaction between language and information graphics in multimodal documents served as the basis for this study. More specifically, our purpose was to investigate the role of linguistic annotations in graph-text documents. Participants were presented with three newspaper articles in the following conditions: one...

Deniz çayırları Posidonia ocenica L. (Delile), Akdeniz Havzasındaki en zengin ve yaygın olarak dağılan türlerden (Magnoliophyta)’dir. Bu çiçekli deniz bitkisi 0-40 m aralığındaki derinliklerde yoğun çayırlar oluşturmaktadır. P. oceanica çok yavaş büyüyen (3 cm yıl-1) ve üremesini nadir olarak tohumlarla sağlayan bir fanerogam (=Çiçekli Bitki) türüd...