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equals 3-best accuracy means all the correct answers are in the first position,
that is, they are amongst the first three positions.) However, this use case only
focuses on the questions related to ill-growth of the plant. Moreover, we evalu-
ated the search function in this experiment, but the accuracy of the registration
has not been studied yet. In the near future, we intend to collect a broader
range of questions and registration statements, and conduct the evaluation on
the accuracy and the performance.
Context Registration.
We also conducted experiments to confirm the
usefulness of the context registration. In the experiment, we also used the
dataset regarding questions and answers on plant growth retrieved from
the Q&A sites. Table
3
presents the properties representing a series of
planting
withering that are registered by the
user statement, and the context information obtained by the sensors. In
the table, the intersection of the line of 'gtcprop:flowerDate' and the col-
umn of 'Location' means that when a user registers the date a flower has
blossomed, then the Location information is automatically registered at the
same time. Then, the number where the line and the column intersect
means the co-occurrence ratio of these two information in the answers of
the dataset. That is, answers for questions about the time when a flower
blossoms include the Location information with 54.5% probability in the
dataset. The size of the dataset is as follows: 414 answers for 'planting-
Date', 114 answers for 'flowerDate', 128 answers for 'pruningDate', and 99
answers for 'dieDate'. But we excluded short answers consisting of only
one or two lines. In this experiment, we considered that the additional
information that has been described together with the original information
in the answer is worth registering to the Plant Cultivation LOD. There-
fore, we regarded that the automatic registration of such context informa-
tion has usefulness.
→
flowering
→
pruning
→
Table 3.
Co-occurrence ratio (%) of registered property and collected context
Space
{
Indoor,
Outdoor
}
Location Weather
High
Temp.
Low
Temp. Humid
registered property Time
gtcprop:plantingDate 0.0
42.9
14.3
28.6
42.9
57.1
42.9
gtcprop:flowerDate
9.1
45.5
54.5
18.2
36.4
45.5
27.3
gtcprop:pruningDate
0.0
11.1
11.1
0.0
0.0
11.1
11.1
gtcprop:dieDate
0.0
12.5
25.0
25.0
25.0
37.5
37.5
(avg.)
2.3
28.0
26.2
17.9
26.1
37.8
29.7
As a result, the context information has the variation in its usefulness (0.0%
- 57.0%). However, most of them have at least more than 20% on the average,
thus the context registration mechanism can be regarded useful.
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