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  <front>
    <journal-meta>
      <issn pub-type="ppub">1613-0073</issn>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Digital Humanism in Smart Built Environments through SOLID Data Spaces</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Amin Anjomshoaa</string-name>
          <email>amin.anjomshoaa@wu.ac.at</email>
          <xref ref-type="aff" rid="aff2">2</xref>
          <xref ref-type="aff" rid="aff3">3</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Kabul Kurniawan</string-name>
          <email>kabul.kurniawan@wu.ac.at</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
          <xref ref-type="aff" rid="aff3">3</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Ardeshir Mahdavi</string-name>
          <email>a.mahdavi@tugraz.at</email>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="editor">
          <string-name>Data Spaces, Digital Humanism, Smart Built Environment</string-name>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Austrian Center for Digital Production</institution>
          ,
          <addr-line>Vienna</addr-line>
          ,
          <country country="AT">Austria</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Institute of Building Physics, Services and Construction, TU Graz</institution>
          ,
          <addr-line>Graz</addr-line>
          ,
          <country country="AT">Austria</country>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>The 1st Solid Symposium Poster Session</institution>
          ,
          <addr-line>co-located with the 2nd Solid Symposium</addr-line>
        </aff>
        <aff id="aff3">
          <label>3</label>
          <institution>Vienna University of Economics and Business</institution>
          ,
          <addr-line>Welthandelsplatz 1, 1020 Vienna</addr-line>
          ,
          <country country="AT">Austria</country>
        </aff>
      </contrib-group>
      <abstract>
        <p>The built environment significantly influences people's health, comfort, and productivity. With the rise of IoT and the integration of AI solutions in smart environments, buildings have evolved into complex ecosystems, interacting with inhabitants and surrounding systems. Two challenges arise: a knowledge gap in understanding inhabitant behavior's impact on building systems and the need to address privacy concerns in AI-enabled environments. This research aims to explore these challenges through the lens of digital humanism, focusing on creating semantically enabled data spaces in smart built environments. To this end, we propose LIGO Framework based on Solid specifications to model occupants' behavior, ensure data ownership, control and privacy as well as enhance communication between inhabitants and building services.</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>-</title>
      <p>CEUR
ceur-ws.org</p>
    </sec>
    <sec id="sec-2">
      <title>1. Introduction</title>
      <p>
        ’privacy paradox’ and compensating for the privacy risks with the convenience ofered by smart
environments [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ]. In other words, the benefits of customization and services ofered by smart
environments are weighed against consideration of digital humanism perspective [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ], which
strives to embed values such as human dignity, freedom, and autonomy in the digital domains.
As such, balancing the benefits of data-driven insights with the protection of individual privacy
is crucial for fostering trust and ethical use of technology in smart environments.
      </p>
      <p>In this context, we argue in the present contribution that, to efectively harness the potential
of smart building systems, fundamental issues related to information access, privacy concerns,
and data security must be addressed both conceptually and technically. In our work, we put
forward the idea of an innovative computational application, which we shall refer to as LIGO
(after the Latin expression for to tie, to bind, to interlink). LIGO is conceived to facilitate the
negotiation between data spaces representing building occupants on the one side and data
spaces representing Smart Building Systems (SBS) on the other side, whereby digital humanism
principles (predominantly privacy and information integrity of the building occupants) are to
be considered and built-in. The proposed framework sets out ambitious goals, including:
• Bridging the digital gap in modeling occupants’ presence, perception, and behavior in
buildings while accounting for and accommodating their vital data sharing and privacy
requirements.
• Bridging the communication and interoperability gaps between building information
models and AI-enabled services by incorporating provenance and compliance verification
mechanisms for inhabitants.
• Enabling the occupants to actively, selectively, and dynamically filter the flow of
information from their data space to that of the smart building systems.
• Enabling the SBS data space to provide the users with timely, efective, and intuitively
understandable information about the building, its operational status, the degrees of
freedom for control actions, and general orientation.</p>
      <p>
        To realize these goals and address the technical challenges, we aim to leverage the Solid
framework, a decentralized web platform built on top of existing RDF standard1, where users
can store their data in Solid Pods (Personal Online Data Stores) and provide them with greater
control over who can access and use their information [
        <xref ref-type="bibr" rid="ref4">4</xref>
        ]. In our LIGO framework, Solid serves
as a communication channel that facilitates data exchange between the built environment and
its occupants while ensuring data ownership, control, and privacy. Furthermore, we provide
an ontological foundation for the proposed framework, along with a preliminary technical
specification of the elements required for its implementation.
      </p>
    </sec>
    <sec id="sec-3">
      <title>2. Digital Humanism</title>
      <p>
        Digital technologies have a profound impact on every aspect of our modern life, from social
interactions and work environments to political systems and cultural norms. While the advent
of digitalization ofers unique opportunities, it also triggers significant concerns regarding
1https://www.w3.org/2011/rdf-wg/wiki/Main_Page
fundamental aspects of human existence, including dignity, autonomy, and privacy. In response
to these challenges, Digital Humanism has emerged as a guiding vision, ofering an alternative
to technology-driven approaches to digitalization. Its overarching aim is to address various
concerns and side efects that arise in the wake of disruptive digital processes. Originating
in Vienna, Digital Humanism finds its roots in the collaborative eforts of researchers from
diverse fields, spanning social sciences, humanities, and computer science. The result of
these collaborative eforts was the publication of the well-known position paper, the ”Vienna
Manifesto on Digital Humanism,” [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ] which has garnered widespread recognition and support.
The manifesto underscores the importance of prioritizing human values and well-being amidst
the relentless march of technological advancement. Central to the principles of digital humanism
is the idea that technology should empower individuals, foster inclusivity, and promote social
justice. It emphasizes the importance of considering the diverse needs and perspectives of
people from all walks of life, ensuring that technological solutions are accessible, equitable, and
respectful of human rights [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ].
      </p>
    </sec>
    <sec id="sec-4">
      <title>3. Proposed Framework</title>
      <p>Our proposed LIGO framework consists of several core semantically enabled data spaces, namely
the Personal Data Spaces (PDS), the Building Data Spaces (BDS), and the External Data Spaces
(EDS) as depicted in Fig. 1.</p>
      <p>
        With regard to the configuration and operational aspects of smart buildings, theoretical
foundations and technical knowledge in mechanical, structural, and electrical engineering
domains are well established. Starting of from these, Building Information Modelling (BIM)
[
        <xref ref-type="bibr" rid="ref6">6</xref>
        ] approaches provide the core ontological framework for creating the building data spaces.
Matters are somewhat more complex in the case of the necessary theoretical and ontological
conditions for creating and operationalizing data spaces related to building users (occupants).
There are a number of behavioural theories relevant to occupants’ perception of and actions in
built environments [
        <xref ref-type="bibr" rid="ref7">7</xref>
        ], but the translation of those into the building operation domain has not
been suficiently accomplished [ 8]. In order to realize the LIGO vision, our data space ontology
will reuse the occupant-centric theory of building control systems and occupant behavior and
the derivative OTTO ontology [9].
      </p>
      <p>The LIGO framework serves as a mediator between user-side data spaces (representing
individual building users) and SBS-side data spaces (representing building situation and condition).
As depicted in Fig. 2, the main components of LIGO frameworks are as follows:
(i) The Personal Data Space (PDS) component pertains to individuals’ data and encompasses
basic user information, including individual attributes, needs, capabilities, and preferences
(e.g., comfort and auditory preferences). Within the LIGO framework, PDS will leverage
Solid Storage2 that provide ’access control’ mechanism, allowing for the selective granting of
permissions to share data with the SBS.</p>
      <p>(ii) The Building Data Space (BDS) component pertains to information related to general
building information and services (e.g., building systems, building properties, etc.). Similar to
PDS, we will leverage Solid server to manage building-related data and provide fine-grained
access control and selective sharing of building data with relevant stakeholders.</p>
      <p>(iii) The External Data Space (EDS) component represents relevant external information
(e.g. weather conditions, social interaction, climate information, etc.). This component will
also be implemented using Solid Storage to aggregate and manage external data sources in a
decentralized manner.
2https://solidproject.org/TR/protocol#storage</p>
      <p>(iv) The Smart Building System (SBS) component leverages the digital humanism model
embedded within LIGO data spaces, enhancing contextual awareness in building processes
and facilitating tailored service recommendations. This component is realized as Solid-based
application server that performs read and write operations on top of diferent Solid Storages
from PDS, BDS and EDS.</p>
      <p>(v) The SBS User Interface (SBS-UI) component serves as an “end-user app” that enables users
to seamlessly interact with SBS and share their personal data. It communicates with the SBS
server through a Web API and provides control over the use of the SBS system.</p>
    </sec>
    <sec id="sec-5">
      <title>4. Outlook</title>
      <p>The key motivating factor behind the present contribution was the perception of a critical gap
between: i) the increasing potential of Big Data, AI, IoT, and cloud computing to facilitate the
creation and operation of smart built environments on the one side, and ii) the reservations
toward fully embracing such technologies due to digital humanism concerns (privacy, security,
freedom of choice, and dignity) formulated, among other places, in the digital humanism
manifesto. In this paper, we provided an overview of an ongoing development to facilitate
user-controlled, safe, and secure communication between building occupants and smart building
systems. Ongoing eforts aim at implementing the related concept of the LIGO framework based
on the Solid concepts and making it fully operational, and testing it for consistency, stability,
robustness, and user experience.
[8] T. Hong, S. D’Oca, W. J. Turner, S. C. Taylor-Lange, An ontology to represent energy-related
occupant behavior in buildings. part i: Introduction to the dnas framework, Building and
Environment 92 (2015) 764–777.
[9] A. Mahdavi, D. Wolosiuk, C. Berger, Toward a theory-driven ontological framework for
the representation of inhabitants in building performance computing, Journal of Building
Engineering 73 (2023) 106804.</p>
    </sec>
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