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  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>Sixth International Workshop on Cultures of Participation in the Digital Age: AI for
Humans or Humans for AI? June</journal-title>
      </journal-title-group>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Big data for humans or humans for big data?: a human-data interaction perspective</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Shin'ichi Konomi</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>HDI Lab, Faculty of Arts and Science, Kyushu University</institution>
          ,
          <addr-line>744, Motooka, Nishi-ku, Fukuoka 819-0395</addr-line>
          ,
          <country country="JP">JAPAN</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2022</year>
      </pub-date>
      <volume>7</volume>
      <issue>2022</issue>
      <fpage>0000</fpage>
      <lpage>0001</lpage>
      <abstract>
        <p>Designing "big data for humans" would require so-called human-data interaction. In this paper, we discuss key dimensions of human-data interaction to enable a look at the field from a broader perspective and facilitate developments of "big data for humans". Our discussion is based on the relevant research projects in our group at the intersections of human-data interaction and recommendation and search, pervasive computing, civic computing and learning analytics.</p>
      </abstract>
      <kwd-group>
        <kwd>eol&gt;Human-data interaction</kwd>
        <kwd>human-centered big data</kwd>
        <kwd>calm technology</kwd>
        <kwd>data science</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>
        Bell and Gray (1997) predicted that all information about physical objects, humans, buildings,
processes, and organizations will be online by 2047 [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ]. Twenty five years have passed since
their prediction, and there are only 25 years left before the possible dawn of the fully datafied
world according to their prediction. By 2025, it’s estimated that 463 exabytes of data will be
generated each day globally [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ].
      </p>
      <p>
        The sheer volume, variety and velocity of the ever-increasing data can easily create the
situations of information overload. Quick fixes for the information overload problem often rely
on straightforward automation, which may fail to fit human needs in diferent contexts. Going
beyond such myopic approaches would require smartness at a diferent level to embed right
opportunities for people to interact with and intervene big-data systems at the right time and
in the right way. This can be a key step towards the design of calm technology [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ].
      </p>
      <p>Having people involved in big-data environments requires human-data interaction.
Humandata interaction (HDI) is an emerging field of interdisciplinary inquiry that is concerned with
understanding and developing technologies for supporting human interactions with digital
data. Such interactions may occur in the contexts of data collection, data wrangling, algorithm
design, analytics, visualization, recommendation, classification, prediction, interpretation, and
so on.
Data collection</p>
      <p>Data
preparation</p>
      <p>Analysis and
modeling</p>
      <p>Evaluation</p>
      <p>Deployment</p>
      <p>Business
Understanding</p>
      <p>Data</p>
      <p>Understanding
Upstream</p>
      <p>Downstream</p>
      <p>
        Human-data interaction emphasizes the human-centered approach and existing works in this
ifeld focuses on its diferent facets [
        <xref ref-type="bibr" rid="ref4">4</xref>
        ]. Mortier, Haddadi, Henderson, McAuley and Crowcroft
discuss human-data interaction with their proposal to place humans at the center of the flows
of data, and provision of the mechanisms for citizens to interact with these systems and data
explicitly [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ]. They also propose and elaborate on the three core themes relevant to human-data
interaction, namely, legibility, agency, and negotiability. Crabtree and Mortier discuss
humandata interaction from social and interactional perspectives, and look at the need to develop
social models and mechanisms of data sharing that enable users to play an active role in the
process [
        <xref ref-type="bibr" rid="ref6">6</xref>
        ]. Mashhadi, Kawsar and Acer draw our attention to the importance of human-data
interaction in Internet of Things environments with ubiquitous devices [
        <xref ref-type="bibr" rid="ref7">7</xref>
        ]. Cabitza and Locoro
discuss healthcare data through the lens of human-data interaction [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ]. Other studies look
into embodied interactions for exploring large data sets [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ], and a media service that exploits
personal data to provide content recommendations [
        <xref ref-type="bibr" rid="ref10">10</xref>
        ].
      </p>
      <p>
        In this paper, we discuss key dimensions of human-data interaction to enable a look at the
ifeld from a broader perspective and facilitate developments of "big data for humans". Our
discussion is based on the relevant research projects in our group at the intersections of
humandata interaction and recommendation and search, pervasive computing, civic computing and
learning analytics.
2. Three key dimensions of human-data interaction
In this section, we introduce the three dimensions for classifying human-data interaction
environments. We identified these dimensions based on a survey of related works [
        <xref ref-type="bibr" rid="ref10 ref4 ref5 ref6 ref7 ref8 ref9">4, 5, 6, 7, 8,
9, 10</xref>
        ], our own experiences with relevant projects [
        <xref ref-type="bibr" rid="ref11 ref12 ref13 ref14 ref15 ref16 ref17 ref18">11, 12, 13, 14, 15, 16, 17, 18</xref>
        ] as well as an
existing process model for data science [
        <xref ref-type="bibr" rid="ref19">19</xref>
        ]. Table 1 shows these three dimensions in a tabular
format.
      </p>
      <p>The first dimension concerns with the process for using big data (see Figure 1). The process
starts with data collection, followed by data understanding, data preparation through data
wrangling, analysis and modeling via visualization and/or machine learning algorithms,
evaluation, and deployment of the resulting model or actions based on the gained insights. For</p>
      <sec id="sec-1-1">
        <title>Synchronous</title>
      </sec>
      <sec id="sec-1-2">
        <title>Asynchronous</title>
      </sec>
      <sec id="sec-1-3">
        <title>Personal data Public data</title>
      </sec>
      <sec id="sec-1-4">
        <title>Upstream Downstream Upstream Downstream</title>
        <p>Real-time in- Real-time in- Real-time in- Real-time
interaction with teraction with teraction with teraction with
personal data at personal data public data at public data at
upstream steps at downstream upstream steps downstream
(e.g., Collect- steps (e.g., Inter- (e.g., Collecting steps (e.g,
Intering personal active analysis urban public active analysis
health data of data in data interac- of urban
pubinteractively) personal infor- tively) lic data sets,
matics) possibly using
an embodied
interaction
interface)
Long-term in- Long-term in- Long-term in- Long-term
interaction with teraction with teraction with teraction with
personal data at personal data public data at public data at
upstream steps at downstream upstream steps downstream
(e.g., Collect- steps (e.g., Per- (e.g., Collecting steps (e.g.,
Noning personal sonalized news urban public personalized
health data recommenda- data automat-
recommendaautomatically tion based on ically and use tion of popular
and use it at an incremen- it at a later news based on
a later point tally improved point in time. an
incremenin time. Im- machine- Improving data tally improved
proving data learning model collection to
machinecollection to address ethical learning
address privacy issues.) model)
issues.)
example, human-data interaction can take place downstream in this process during the analysis
and modeling phase by using interactive visualization tools. In other cases, it can take place
upstream during data collection phase by turning on and of GPS tracking on one’s smart phone.
This upstream-downstream dimension captures the point of human-data interaction in this
process, and allows us to consider the diferences of human-data interaction accordingly.</p>
        <p>The second is the personal-public dimension that concerns with the characteristics of data
with which people interact. For example, embodied interaction with public data sets in a VR
environment is public in this dimension, whereas personal news recommendation systems may
use personal data about people. This dimension allows us to consider diferent concerns around
the interaction with public and personal data.</p>
        <p>The third is the synchronous-asynchronous dimension that concerns with the time aspects of
human-data interaction. This dimension distinguishes the diferent modes of human-data
interaction in a similar way as the synchronous-asynchronous classification of computer-supported
cooperative work environments. For example, interactive analysis of data sets using an
em</p>
      </sec>
      <sec id="sec-1-5">
        <title>Synchronous</title>
      </sec>
      <sec id="sec-1-6">
        <title>Asynchronous</title>
      </sec>
      <sec id="sec-1-7">
        <title>Upstream - Deai</title>
      </sec>
      <sec id="sec-1-8">
        <title>Explorer[12]</title>
        <p>- Learning</p>
      </sec>
      <sec id="sec-1-9">
        <title>Analytics for All[16] - Deai</title>
      </sec>
      <sec id="sec-1-10">
        <title>Explorer[12] - e-Book</title>
      </sec>
      <sec id="sec-1-11">
        <title>Reading</title>
      </sec>
      <sec id="sec-1-12">
        <title>Analytics[15]</title>
      </sec>
      <sec id="sec-1-13">
        <title>Upstream</title>
        <p>
          - Askus[
          <xref ref-type="bibr" rid="ref13">13</xref>
          ]
- Vacant
        </p>
      </sec>
      <sec id="sec-1-14">
        <title>House[17]</title>
        <p>- Community</p>
      </sec>
      <sec id="sec-1-15">
        <title>Reminder[14] - Vacant</title>
      </sec>
      <sec id="sec-1-16">
        <title>House[17]</title>
        <p>- Community</p>
      </sec>
      <sec id="sec-1-17">
        <title>Reminder[14] - CourseQ[11] - Deai</title>
      </sec>
      <sec id="sec-1-18">
        <title>Explorer[12] - Co-location networks [18]</title>
        <p>bodied interaction interface falls into the synchronous category. When people improve the
behaviors of a recommendation system by changing some preference settings or by replacing
its algorithm with a more privacy-preserving and less biased one, such interactions can be
considered as asynchronous.</p>
      </sec>
    </sec>
    <sec id="sec-2">
      <title>3. Case studies to explore the dimensions</title>
      <p>We next look further into the proposed dimensions of human-data interaction based on several
existing systems, which have been developed by our group. The purposes of the systems include
recommendation and search, pervasive computing, civic computing, and learning analytics. Their
HDI features can be classified into diferent categories as shown in Table 2.</p>
      <sec id="sec-2-1">
        <title>3.1. Recommendation and search</title>
        <p>
          CourseQ [
          <xref ref-type="bibr" rid="ref11">11</xref>
          ] is a course recommendation system for university students based on a syllabus
data set and a topic modeling-based algorithm. Although many existing course recommendation
systems focus on the accuracy of recommendation, they may fail to recommend the courses
that the students feel truly relevant. We introduced various interactive features in CourseQ
so as to improve user-centric metrics such as user acceptance as well as understandability of
recommendation results.
        </p>
        <p>The interactive features of CourseQ include keyword-based search and filtering, interactive
visualization of recommended courses, dynamic presentation of relevant auxiliary information
and explanation with the recommended results, and a ’like’ button. These features mainly
support synchronous interactions with the publicly available data set, however, the interactivity
does not allow users to change the data sets and other elements in the upstream process.
CourseQ thus provides synchronous downstream human-data interaction based on public data.</p>
      </sec>
      <sec id="sec-2-2">
        <title>3.2. Pervasive computing</title>
        <p>
          DeaiExplorer [
          <xref ref-type="bibr" rid="ref12">12</xref>
          ] is a social-network display that responds to RFID badges carried by conference
participants and displays social connections between colocated conference participants. The
system exploits a public data set from a publication database as well as data collected from
RFID readers based on participants’ agreement. The system visualizes social network structures
based on these two types of data in order to facilitate social interactions among conference
participants. The interactive feature of DeaiExplorer allows conference participants to access
their social network visualizations just by showing their RFID badges to the RFID reader. This
feature allows users to interact with public and private data in a synchronous manner. As this
interactivity allows users to control the capture of their RFID data by (not) showing badges to
the RFID reader, the system allows synchronous human-data interaction in both upstream and
downstream processes.
        </p>
        <p>
          Askus [
          <xref ref-type="bibr" rid="ref13">13</xref>
          ] is a type of so-called participatory sensing systems, which allows users to collect
data manually by using mobile phones. It thus concerns with the upstream process, and mainly
supports synchronous human-data interaction with public environmental data, etc.
        </p>
        <p>
          Co-location networks [
          <xref ref-type="bibr" rid="ref18">18</xref>
          ] analyze urban mobility data sets based on network analysis
techniques. This analysis was performed multiple times based on an iterative improvements of
network analysis techniques. It thus concerns with asynchronous interaction with public data
in the downstream process.
        </p>
      </sec>
      <sec id="sec-2-3">
        <title>3.3. Civic computing</title>
        <p>
          Our WiFi-based sensing tool to predict vacant houses [
          <xref ref-type="bibr" rid="ref17">17</xref>
          ] is a type of so-called opportunistic
sensing systems, which allows local community members to collect data automatically by just
walking around in their community with their mobile phones in their backpacks. Users’ choices
of walking routes can control data collection in a synchronous manner. Data collection can be
controlled asynchronously by changing the setting of WiFi sensing software. It thus concerns
with the upstream process, and mainly supports synchronous and asynchronous human-data
interaction with WiFi signals in public spaces.
        </p>
        <p>
          Community Reminder [
          <xref ref-type="bibr" rid="ref14">14</xref>
          ] is also a type of participatory sensing systems, which allows local
community members to collect information about the safety in their communities using mobile
phones. Local community members can also participate in the design of the data collection
mechanisms of this system using an intuitive tangible user interface. This system concerns
with both synchronous and asynchronous aspects of public data collection.
        </p>
      </sec>
      <sec id="sec-2-4">
        <title>3.4. Learning analytics</title>
        <p>
          Our research projects in this area include analysis of e-book reading patterns [
          <xref ref-type="bibr" rid="ref15">15</xref>
          ] as well as an
efort to provide learning analytics for all age groups and in developing communities without
reliable internet access [
          <xref ref-type="bibr" rid="ref16">16</xref>
          ]. The former analysis can be performed in an iterative manner based
on diferent research questions and techniques. It thus concerns with asynchronous interaction
with personal data in the downstream process. The interactive features of the latter includes
delayed data transmission of learning log data using mobile phones[
          <xref ref-type="bibr" rid="ref16">16</xref>
          ]. It thus concerns with
asynchronous interaction with personal data in the upstream process.
        </p>
      </sec>
    </sec>
    <sec id="sec-3">
      <title>4. Discussion and conclusion</title>
      <p>We introduced the three key dimensions for classifying human-data interaction environments,
i.e., the upstream-downstream, personal-public, and synchronous-asynchronous dimensions.
Existing research projects tend to focus on one or more areas with respect to these dimensions.</p>
      <p>The discussions of the several existing systems for recommendation and search, pervasive
computing, civic computing, and learning analytics provided an opportunity for a further look
into the proposed HDI dimensions, and demonstrated how they can highlight commonalities
and diferences of various human-data interaction systems.</p>
      <p>
        Interaction is everywhere in the space defined by the proposed dimensions. Thinking about
big data systems from the perspectives enabled by these dimensions would help us analyze
and/or design a broader range of big data and AI systems with humans at the center and
their data interactions in mind. It reminds the designers and the users of such systems that
they are embedded in larger contexts, and the importance of providing the right opportunities
for humans to play active roles in the context. One of the major advantages of emphasizing
interactions in big data and AI systems can be, as our experiences with CourseQ [
        <xref ref-type="bibr" rid="ref11">11</xref>
        ] suggests,
people’s increased trust with data-centric smart mechanisms such as recommender systems,
which could in turn lead to people’s improved satisfaction with such systems.
      </p>
    </sec>
    <sec id="sec-4">
      <title>Acknowledgments</title>
      <p>This work was supported by JSPS KAKENHI Grant Number JP20H00622.</p>
    </sec>
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