Sabine Janzen

• PhD
• Senior Researcher at Deutsches Forschungszentrum für Künstliche Intelligenz

Predicting earthquakes with precision remains an ongoing challenge in earthquake early warning systems (EEWS), that struggle with accuracy and fail to provide timely warnings for impending earthquakes. Recent efforts employing deep learning techniques have shown promise in overcoming these limitations. However, current methods lack the ability to c...

In the face of increasing frequency and severity of crises such as natural disasters, pandemics, and geopolitical conflicts, civil protection organizations are crucial for recovery and support for affected populations. However, the efficiency and effectiveness of these organizations in crisis response are often hindered by the manual generation of...

The worldwide energy-crisis poses a critical risk to the energy-intensive process industry. Rising costs for gas lead to increased usage of electrical power (e.g. for heating) that network operators are not prepared for. Weather-dependent energy-sources (e.g. windparks, solar panels) lead to additional fluctuations within the power grid. In worst c...

Non-collaborative dialogues like sales dialogues are characterized by congruent intentions, i.e. intentions that are agreed by dialogue partners, and conflicting intentions. We will refer to these intentional structures as mixed intention sets. In this paper, we will investigate dialogue systems that are benevolent towards a dialogue partner, i.e....

Ubiquitous Information Systems (UIS) embedded in everyday environments are required to provide means for supporting complex behavioral task requirements. With the concept of a situation, we propose a knowledge level that can be used by users for understanding UIS-enhanced environments. It is discussed how the concept of situation differs from the c...

Designing complex information systems is a task performed by design teams with team members coming from different domains with different expertise. Shared understanding between members of a design team throughout a project is still a challenge. A design framework is presented that integrates individual design knowledge, explicit design knowledge us...

A conceptual modeling approach for Ubiquitous Information Systems (UIS) is presented as a central part of a UIS design methodology. Three conceptual models are used for step-wise derivation of machine-executable design models for distributed service infrastructures: narratives, pattern-based diagrammatic conceptual models (Pre-Artifacts), and forma...

Sales talks between customers and sales personnel are efficient and preferred means for exchanging information that is relevant for purchase decisions on non-commodity products. Dialogs used in sales talks are governed by complex and in many respects conflicting intentions on both sides. While previous Decision Support Systems (DSS) are designed by...

Dialogue interaction between customers and products improves presentation of relevant product information in in-store shopping situations. Thus, information needs of customers can be addressed more intuitive. In this article, we describe how access to product information can be improved based on dynamic linkage of heterogeneous knowledge representa...

The design of ambient environments does not depend on technical issues exclusively but also on social aspects. There are several design specifications for ambient environments and corresponding development principles, a design method should address. In this paper, we review design methodologies concerning the coverage of existing design principles...

Ubiquitous computing technologies disclose new means for consumer product designs that allow products to adapt their behaviour and in particular communication to consumer needs and to interact with other products. In this sense, products become smart. Dialogues between products and consumers require new communicative product interfaces. Because unp...

Ubiquitous computing technologies disclose new means for consumer product designs that allow products to adapt their behaviour and in particular communication to consumer needs and to interact with other products. In this sense, products become smart. Dialogues between products and consumers require new communicative product interfaces. Because unp...

Natural Language communication between customers and products within in-store shopping environments enables new forms of product interfaces and an improved filtering and intuitive presentation of product information. In this article, we describe how customer's access to product information at the point of sale can be improved through the use of dia...

Mobile technologies have the potential to change not only brick-and-mortar stores but also the way, how customers interact with physical products. They enable operational agility by means of improved availability and quality of information required by customers for in-store purchase decisions. In this paper, we show how an in-store bundling scenari...

Ambient intelligence technologies rapidly change product capabilities but also the way how users interact with physical products. This product-centered stance requires an instance-centered Product Life Cycle (iPLC) view which perceives products as autonomous actors performing in physical situations which leads to the concept of smart products. Smar...

Smart products connect the drafts of physical products and information goods and allow the embedding of digital product information into physical products. This concept demands specific knowledge representations, especially digital product information. After consideration of several standardized product descriptions, we present the Smart Product De...

Ambient environments are characterized by an ever increas-ing amount of information that needs to be selected and organized in order to make correct assumptions about users, entities, etc. within a specific context. This issue can be addressed by using ontologies that meet the specific requirements of such environments. In this paper, we survey ont...

Ubiquitous Information Systems (UIS) support single actors and groups by services over ubiquitous computing technologies anywhere and anytime. These sys-tems require design approaches that keep a holistic view of situations in which single users and groups interact with one another and with accessible services. We introduce and exemplify the Situat...