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    <article-meta>
      <article-id pub-id-type="doi">10.1007/978-3-642-35173-0_28</article-id>
      <title-group>
        <article-title>Emerging Tastes: Considering How Preferences Evolve</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Duane Degler Design for Context Washington</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>USA duane@designforcontext.com</string-name>
        </contrib>
      </contrib-group>
      <pub-date>
        <year>2012</year>
      </pub-date>
      <fpage>391</fpage>
      <lpage>398</lpage>
      <abstract>
        <p>Experiencing cultural heritage is a voyage of discovery and learning, where emerging insights and serendipity play a significant role. The experience also happens in a blended personal and social context. At the broader level, engagement is longitudinal - what we learn from modern cultural experiences (daily life in our surroundings) can provide clues to analogous interests in cultural materials, and vice versa. The richness of personal experience poses challenges and opportunities for capturing preferences in ways that support a user's experience with cultural heritage across institutions and over time, both in the digital realm and where digital interaction blends with a physical space.</p>
      </abstract>
    </article-meta>
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      <title>-</title>
      <p>It is important to recognize that the domain’s data itself is a
moving target – available data (particularly linked open
data) is emerging rapidly. And there are a growing number
of initiatives for institutions to share and harmonize their
data representations online, which means the potential to
integrate information models and user profiles across
cultural institutions will continue to evolve.</p>
      <p>Copyright held by the author.</p>
      <p>
        Our work in cultural heritage has been focused primarily on
the user experience and design of applications for museums
and archives, and helping institutions plan to incorporate
linked data to enhance people’s experience with their
cultural assets. We increasingly support institutions that
want to share and enrich data via federated approaches,
allowing information access to expand over time and across
institutional boundaries. Rich personalization is important.
Many tasks will need a greater level of support as the
volume of digital information – and associations via linked
data capabilities – grows in the coming years. As we design
interfaces, we explore the personal experiences people have
with cultural heritage information, whether online or in
person, and how their expectations and interactions with
cultural heritage evolve over time. The considerations that
arise from that work are the subject of this paper.
CONSIDERATIONS
Designing personalized interactions that are
companionable, flexible, and not awkward is vital. To
achieve that aim, personalization models need to provide a
great degree of user transparency [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ], control and be open
to many outside signals that respond to new experiences
and changing tastes, and are carefully aligned with a user’s
needs and expectations. These aspects are not static – they
change in specific contexts and evolve over time, forming
longitudinal patterns that may help inform how
personalization models adapt.
      </p>
      <p>Preferences Interact with User Knowledge
At any one time, a person’s interaction with cultural
heritage has a purposeful dimension – whether that is
entertainment, knowledge-seeking for its own sake, or
resource-seeking for some outside task.</p>
      <p>To achieve a goal of supporting lifelong learning, it is
important to focus on the general user experience with
digital cultural heritage interactions. Yet there are
specialized audiences who have their own needs for
personalization. Scholars and practitioners in the field of
cultural heritage have a driving motivation for discovering,
interpreting, analyzing, synthesizing, publishing, and
sharing. Their requirements are particularly rich, due to
their specialized and detailed knowledge in particular
subject areas. Educators have varying levels of experience
and knowledge, and they act as surrogates for others who
do not share their level of knowledge. An educator’s
interaction with cultural heritage can be largely driven by a
task that is focused outside themselves, as their role is
primarily communication of cultural heritage information to
others (although they also have their own personal interests
to balance with their professional focus areas).</p>
      <p>
        The richer a person’s experiences and knowledge, the richer
and more nuanced their personalized modeling may need to
be. And the broader the possible goals and tasks, the more
contextually aware applications need to become. At the
same time, single interactions between the individual and
an institution may be motivated by needs that are separate
from preferences and knowledge. For example, Falk [
        <xref ref-type="bibr" rid="ref6">6</xref>
        ]
outlines five ways that individual identity is reflected in
their actions within an institution, including rechargers,
experience-seekers, and facilitators.
      </p>
      <p>Preferences have Scenarios and May be Transitory
There are often situations where a person is engaging with
cultural heritage as an aspect of a very specific, directed
task. This could be writing a paper as a school student, or
researching a book as a scholar, or preparing a treatment for
a major artwork as a museum conservator. While a person
will often be clear about their particular context when
interacting with cultural heritage, they may not externalize
that context to a supporting technology.</p>
      <p>When that task is completed, whether in two weeks or two
years, the intensity of focus decreases. In most cases there
is still an interest in a particular subject or area of culture,
but the goal that prompted a strong, focused interest may
have waned. The corresponding strength of the preference
may need to be tuned accordingly.</p>
      <p>Preferences Emerge over Time
When people encounter something for the first time, they
may not immediately sense its significance. Tastes (and
emotional connections to cultural objects or experiences)
are emergent and are often recognized only on reflection,
rather than “in the moment.” So something “stays with you”
after the experience, or you recognize something as
valuable/important only in the context of subsequent
experiences with other things (they form a pattern that
makes a whole, and a preference forms at that higher level).
Strong interests from one interaction may over time have
evolved or been eclipsed by more lasting connections with
what were, at the time, weaker signals of engagement.
In this way, personalization for cultural heritage may be
more nuanced and longitudinal than preference and
recommendation modeling required in other domains.
When interacting with art and exhibitions, it is also helpful
to recognize that the experience itself may be what is most
important to the user, not necessarily the specific object of
the experience. In a recent conversation, two museum-goers
described in great detail an electronic exhibition piece
where they interactively engaged with art. They described
deep engagement with the experience but had trouble
recalling the specific art that was the focus.</p>
      <p>
        As systems collect data about interactions (whether clicks,
views, likes, saves, shares), it becomes important to discern
when and how to interpret interaction as interest, and assess
their actual longevity. It is useful to identify what elements
of personal interest/engagement are relevant to the activities
available at a particular cultural venue (whether this is a
formal cultural institution/site, an informal urban location,
or a purely digital online interaction), and identify ways to
interpret what someone “takes away” from the experience.
And algorithmic interpretation gets harder as the time gap
grows between the experience and the expression in an
electronic form. More distant value judgments (ratings,
suggestions from one user to another, etc.) can have lower
validity in recommendation algorithms [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ].
      </p>
      <p>
        Preferences Evolve Through Lifelong Experiences
Where do personal preference signals come from? Cultural
linked data used in education, media, tourism, gaming will
produce aspects of personal interest that can be reflected
back into cultural heritage preferences. This will require a
broader – and more nuanced – way of modeling
“preference”, and reflects the PATCH1 workshop goal of
exploring a longitudinal perspective that encompasses
lifelong learning. Various dimensions to support and
evaluate models have been proposed [
        <xref ref-type="bibr" rid="ref10 ref2">10, 2</xref>
        ].
      </p>
      <p>
        At the broader level, engagement crosses timespans – what
we learn from modern cultural experiences (daily life in our
surroundings) can perhaps translate to analogous interests
in cultural materials from other time periods [
        <xref ref-type="bibr" rid="ref15">15</xref>
        ].
One further aspect to consider for lifelong models is
identifying when a person transitions from experience to
knowing, and as a result is likely to need different kinds of
recommendation, as they are able to be more personally
directed via their own knowledge and experience. In this
way, applications and agents need to consider how much,
and how little, to be involved in an experience.
      </p>
      <p>Preferences are Balanced by Serendipity
Personalization models need to guard against
oversimplicity or rigidity, and in that way foster discovery and
learning. At a basic human level, people seek to engage
with culture and art in order to find delight in something
new as well as to experience known and loved objects.
Serendipity and discovery are a significant motivation for
exploring cultural heritage. This is particularly true among
scholars and curators, whose life work centers around
interpretation and discovering new perspectives. It is also
true for people who engage in conservation and built
cultural environments (archaeologists, historians,
preservationists, architects) who want to engage in the latest
science and interpretation.</p>
      <p>
        Some implementations of personalization can be restrictive,
even if the intention is to reduce informational “noise” and
increase relevance for a user. The “filter bubble” [
        <xref ref-type="bibr" rid="ref13">13</xref>
        ] term
was coined to describe a concern where a system algorithm
1 PATCH 2015: https://patch2015.wordpress.com/about-2
manages navigation through a significant glut of
information, but users are not easily able to go beyond the
boundaries of the algorithm’s filters and may not encounter
something that is valuable and engaging [
        <xref ref-type="bibr" rid="ref12 ref4 ref5">12, 5, 4</xref>
        ].
The overall aim of personalization needs to be transparent
and controllable, so as to avoid becoming restrictive. It is
vital for applications to open up new, unexpected (and yet
ideally tangentially-related) experiences for users in cultural
heritage. Serendipity is not simply random encounters,
rather it is a process that incorporates and synthesizes new
things into experience [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ] – and it needs to be fostered. It is
important to find patterns that can foster an “aha!” moment
– that moment when they discover a relationship between
what they know and what they experience.
      </p>
      <p>
        Preferences are Influenced by Social Interactions
When I go to a museum with other people, we engage with
things that Group/social interaction in physical space makes
it harder to know what is persistently preferential for the
individual rather than a reflection of an immediate social
group dynamic. What do I “keep for later” and transfer
between contexts, and what is purely “in the moment” for
my relationship with the people and place?
One research area to consider is exemplified by the
Epiphany Project [
        <xref ref-type="bibr" rid="ref7">7</xref>
        ]. This emerging research aims to
analyze social media streams to identify how individual
interests, and institutional influences, are mirrored in what
an individual publishes via social media.
      </p>
      <p>
        In addition, the role of intra-group profiling of personalized
dimensions plays a role in weighting recommendations and
interactions in situations where the experiences are social.
Another aspect of social interaction with taste-making is
that a person’s knowledge of participants in a community
and the mutual alignment of interests can affect their
interpretation of how they judge recommendations [
        <xref ref-type="bibr" rid="ref17">17</xref>
        ].
When in a social recommendation environment for some
subject I don’t know well, I expect to use different value
judgments about other people’s preferences in relation to
my interests. And those judgments can grow and change
over time as my interaction with those same people grows
over time, calling for an evolutionary learning approach to
my preferences based on social context.
      </p>
      <p>
        Preferences are Uneven Across Descriptive Dimensions
The dimensions of description and interpretation of cultural
material and places are deeply multi-faceted. As we know
that not all dimensions have equal weight in a person’s
engagement with culture [
        <xref ref-type="bibr" rid="ref15">15</xref>
        ], finding longitudinal patterns
is important for discerning relative weighting of interests
derived from personal experience.
      </p>
      <p>
        As we consider rich dimensions, it is important also to
consider the challenges that arise from such deepening data
pools. In the recent book Understanding Context [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ],
Andrew Hinton writes:
“…no matter how enabled by artificial intelligence, such
metamaps and compasses tend to become less accurate as
they try to be smarter and more richly relevant to context.
The bigger the gap we’re trying to bridge, the more it’s
subject to the fog of ambiguity…” (pg.104)
Implications arise from rich multi-dimensionality, uneven
interest weighting, and increasing ambiguity. Items that
users select among online artwork or cultural artifacts today
could themselves have a different “profile” at a future date,
changing the way that automated personalization systems
then map between profiles of the art and the nature of a
person’s interests over time. So not only is a person’s
longitudinal profile evolving, but the object models that are
drawn upon also evolve, with uncertain consequences.
INFORMATION ARCHITECTURE AND DESIGN
At the information architecture level, how can publishers of
cultural heritage information and creators of cultural
experiences formulate dynamic information architectures
that respond appropriately to personal representations and
departures from those representations? And how can the
technology community establish models and frameworks
that reflect the inherent dynamism in this data?
At the UI level, how can we use UI frameworks to broaden
and evolve experiences, without losing focus or
overwhelming the user? Is it feasible to craft an “ambient”
awareness of information and opportunities for
engagement, without at the same time intruding on an
individual’s primary experience?
For the overall experience, how do we establish design
patterns that make sure a person has an easy way to “turn
off” aspects of personalization that become dissonant to
their immediate experience, or where their digital
interactions are out of the immediate context? For example,
using a mobile device to look something up based on an
inprogress conversation with a friend that is not related to the
surrounding cultural space where they are located at that
time? Their task context is separated from their physical
context for some period of interaction. In other words,
make sure the algorithm is not in charge of the experience.
The Role of a Guide or Agent
Recommendations in a cultural setting are likely not just
focused on single objects, but a sequence of items in a place
that help craft an experience flow. We find it helpful to
consider the role of attentive guide as an aspect of
personalization in cultural heritage.
      </p>
      <p>
        Creating an emerging personal profile could involve
interacting with an agent that is focused on your
personalized experience; one that both guides and listens to
a person’s expressions of interest [
        <xref ref-type="bibr" rid="ref14">14</xref>
        ]. One perspective on
this involves the role of the “information flaneur” [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ]. This
is an independent, knowledgeable agent who provides a
perspective on overall information spaces, as well as being
a guide to more specific information objects. The agent
embodies properties of curious explorer, critical spectator,
and creative mind to prompt new perspectives. It is useful
to consider what such a guide would need to know about
the individual and the alignment with the cultural space at
hand, as well as motivations for any particular interaction,
for example as framed by Falk [
        <xref ref-type="bibr" rid="ref6">6</xref>
        ]. The flaneur could offer
a launch point for refining the role of recommendation and
guidance in subjective, interpretive learning settings.
Who Controls the Data?
Beyond the individual’s experience, is there a role for an
aggregation of experience patterns across many individuals
and institutions? How might those aggregations be
consumed and used by an institution, ideally in ways that
increase diversity of experience rather than homogenize?
How might they be shared among institutions, so that they
can craft the way their applications respond to personalized
needs in ways that create more seamless experiences for
individuals as they move among cultural sites?
Personal profiling must, in this context, move beyond
individual applications and institutions. Are there aspects of
personal models that should not only be linked data, but
linked open data so that the models can be extended and
built upon? It is interesting and important to consider to
what extent a profile of personal interests remains under the
control of the person (for example, carried with the person
in their mobile smart phone [
        <xref ref-type="bibr" rid="ref11">11</xref>
        ]), and how much of the
profile needs to be shared with a cultural institution for a
relevant experience to be crafted. It seems clear that the
representation of personal interest is best held by the person
rather than individual institutions or a data aggregator, but
that raises questions that go beyond cultural heritage
personalization.
      </p>
      <p>
        Focusing on the institution’s perspective, how does a
particular cultural environment access an individual’s
personalized model to align the person’s experience with
information or an activity? What permissions might be
required, and perhaps how would an automated agent be
empowered to provide that on a person’s behalf?
POSSIBLE ATTRIBUTES OF PERSONAL MODELS
Reflecting on the above considerations for personalization
leads to attributes that could be incorporated into
frameworks explored by PATCH participants, as well as
others in the cognitive computing and HCI communities.
• Longitudinal preference building: Both the elements of
preference (signals of interests expressed by an
individual) and their strengths may be accrued over time,
so the longevity of interest and the context in which it
arose is evaluated over time.
• Organic movement and decay: Individuals can remain
interested in things long after their focus or tastes have
changed. But models need to provide a method of
“decay” for interests that are not acted on, as preferences
change over time, and outdated preferences can be
perceived as noise by users.
• Recognize shared and social interactions: Models
could usefully identify social contexts that people are in
when preferences are engaged, and have ways of
realigning their weightings accordingly – or prompt the
user to take greater control of the experience.
• Allow dynamic weighting: Recognize context and user
expectations, and provide an appropriate level of control
for a person to express goals and needs. Then have those
expressions reflect back into the preference model.
• Provide simple frameworks for permission-giving:
Plan for an emerging ecosystem of information around
personal interests information and preferences. Identify
how to make the collection and use of information as
transparent as possible, to foster trust and communication
among the parties involved (whether humans, institutions,
or digital agents) [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ].
      </p>
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