Data quality and the Internet of Things



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Liu-et-al-2020 DataQualityAndTheInternetOfThings

Table
3
A
summary
of
methods
used
to
measure
D
Q
d
imensions
in
this
re
vie
w
Dimensions
MTS
M
R
D
A
V
MTI
M
P
P
O
L
R
Accurac
y
[S5,
S6,
S
10,
S18,
S19,
S29,
S30,
S31,
S43,
S45]
[S1,
S6,
S
7,
S8,
S
10,
S12,
S13,
S15,
S17,
S18,
S24,
S42,
S44,
S45]
[S4,
S7,
S
8,
S13,
S18,
S26]
[S1,
S7,
S
31]
[S2]
[S2]
T
imeliness
[S5,
S
29]
[S17,
S21,
S22]
Completeness
[S5,
S
25]
[S13,
S14]
[S11,
S13,
S17,
S25,
S39]
Utility
[S14,
S30]
[S9]
Data
v
o
lume
[S3]
[S3]
Concordance
[S8]
123


Data quality and the Internet of Things
587
to determine how much data was accessed by consumers from the dataset over the
time. Others reported the changes of observations for the objects [S1, S7, S17, S21,
S31] or data rates generated by IoT services [S22], based on multiple updates of the
observation period.
Measurement of presence (MP): The collected IoT dataset is examined to determine
whether or not data elements present. In this review, most studies reported the extent
to which non-missing data presented in a given IoT dataset to describe completeness
[S11, S13, S17, S25, S39].
Process observation (PO): The loading process and physical association of sensors
are situ monitored to ascertain whether or not the data collected makes sense. Only
one study [S2] adopted this method to measure DQ in this review and it reported that
a sensor placed on the outside of a parcel provides inaccurate product temperature due
to external conditions, resulting in inaccurate data.
Log files review (LR): Log files and/or claims investigations on the collected IoT
data are reviewed to determine whether or not data errors or anomalies present. For
example, Hendrik et al. [S2] reviewed the log files of errors and claims investigations
to ascertain accuracy of the sensor data collected in a pharmaceutical cold supply
chain.
5 Discussion
In this section, we summarize the findings of this review and the extent to which they
answer our RQs. We then explore the findings and outline areas that require further
exploration, and present the implications and limitations of this study.

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