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Analysis of log data from Multi-Touch-Table at Herzog-Anton-Ulrich-Museum (HAUM)
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nwickel e9120a2e4b Worked on preprocessing; analyzed what happens with neg. durations; added results to README
2023-08-18 13:42:18 +02:00
code Worked on preprocessing; analyzed what happens with neg. durations; added results to README 2023-08-18 13:42:18 +02:00
README.md Worked on preprocessing; analyzed what happens with neg. durations; added results to README 2023-08-18 13:42:18 +02:00

README.md

Offene Fragen

Datenverständnis

  • Welche Einheit haben x und y? Pixel? --> yes
  • Welche Einheit hat scale? --> some kind if bit, does not matter, when calculating a ratio
  • rotation wirklich degree? --> yes
  • Nach welchem Zeitintervall resettet sich der Tisch wieder in die Ausgangskonfiguration? --> PM needs to look it up

Tisch-Software

  • Gibt es Doku für die Bilder, die über die xml files hinausgeht? Sowas wie ein Manual oder ähnliches?
  • Gibt es evtl. irgendwo noch ein Tablet mit der Anwendung drauf?
  • Was bedeuten die Farben der Topic Cards? --> sieht man in den xml files

Event Logs

  • Wie gehen wir mit "nicht geschlossenen" Events um? Einfach rauslöschen?
    • für Transform tendiere ich zu ja, weil sonst total uninteressant
    • bei flipCard bin ich nicht so sicher... Aber man kann dann keine duration berechnen, wäre NA
  • Moves/scales/rotations ohne Veränderung würde ich auf jeden Fall rauslöschen
  • Es ist nicht möglich (bzw. ich weiß nicht wie) zusammengehörige Events eineindeutig zu identifizieren
    • nach Heuristik vorgehen? Doppelte Transformation start und stop einfach raus?
    • Daten sind nicht "fehlerfrei"; es gibt z.B. Transformation-Events wo das Ende nicht geloggt wurde
  • Wie identifiziere ich eine "Interaktionseinheit"?
    • Was ist ein "case"?
    • Eher grob über Zeitintervalle?
    • Noch irgendeine andere Idee?
  • Herausfinden, ob mehr als eine Person am Tisch steht?
    • Sliding window, in der Anzahl von Artworks gezählt wird? Oder wie weit angefasste Artworks voneinander entfernt sind?
    • Man kann sowas schon "sehen" in den Logs - aber wie kann ich es automatisiert rausziehen? Was ist meine Definition von "Interaktionsboost"?
    • Egal wie wir es machen, geht es auf den "Event-Log-Daten"?
  • Anreicherung der Log-Daten mit weiteren Metadaten? Was wäre interessant?
    • Metadata on artworks like, name, artist, type of artwork, epoch, etc. ˆ - School vacations and holidays ˆ - Special exhibits at the museum ˆ - Number of visitors per day ˆ - Age structure of visitors per day?
    • ... ????

HAUM

  • Bei Sven noch mal nachhaken wegen Besucherzahlen?

Problems and how I handled them

This lists some problems with the log data that required decisions. These decisions influence the outcome and maybe even the data quality. Hence, I tried to document how I handled these problems and explain the decisions I made.

Weird behavior of time_ms and neg. durationvalues

I think the negative duration values happen, when an event starts in one log file and completes in another one. The variable time_ms seems to be continuous within one log file but not over several log files.

dat_all[which(dat_all$duration < 0), ][1:5, 1:10]

# flipCard
## trace 56
dat3[dat3$trace == 56,]

dat[dat$fileid == "2016_11_15-11_12_57.log" & dat$date == "2016-12-15 11:17:26", ]
dat[dat$fileid == "2016_11_15-11_42_57.log" & dat$date == "2016-12-15 11:46:19", ]

#dat[309:1405, ]

tmp <- dat[300:1405, ]
tmp[tmp$artwork == "051", ]
## -> was closed correctly, but does it belong together?


## trace 61
dat3[dat3$trace == 61,]

dat[dat$fileid == "2016_11_15-11_12_57.log" & dat$date == "2016-12-15 11:17:52", ]
dat[dat$fileid == "2016_11_15-11_42_57.log" & dat$date == "2016-12-15 11:46:19", ]

tmp <- dat[350:1408, ]
tmp[tmp$artwork == "057", ]
## -> was closed correctly, but does it belong together?


# openTopic
dat_all[which(dat_all$duration < 0), ][100:105, 1:10]

# trace 2052
dat4[dat4$trace == 2052,]

dat[dat$fileid == "2016_11_17-14_12_10.log" & dat$date == "2016-12-17 14:21:51", ]
dat[dat$fileid == "2016_11_17-14_22_10.log" & dat$date == "2016-12-17 14:22:25", ]

tmp <- dat[23801:23950, ]
tmp[tmp$artwork == "502", ]

plot(time_ms ~ as.factor(fileid), dat[1:5000,])

The boxplot shows that we have a continuous range of values within one log file but that time_ms does not increase over log files.

Since it seems not possible to fix this in a consistent way, I will set negative durations to NA. I will keep time_ms.start and time_ms.stop in the data frame, so it is clear why there are no durations. Maybe it would also be useful to keep logfileid.start and logfileid.stop in the data? Maybe just for proof checking this theory...

Part of it was that timestamps that are part of the log file names are not zero-left-padded. But this fixed only three move events, since it only fixed irregularities within one log file.

table(dat_all[dat_all$duration < 0, "event"])

#  flipCard      move openPopup openTopic
#       562       100        34       284


dat[dat$event %in% c("Transform start", "Transform stop"), ][1100:1300,]
# --> got fixed by left padding... but only three all together!!

dat_all[735, ]

## what it looked like before left padding
# 1422  ../data/haum_logs_2016-2023/_2016b/2016_11_15-12_2_57.log 2016-12-15 12:12:56  599671 Transform start     076 076.xml   NA 2092.25 2008.00 0.3000000   13.26874254
# 1423 ../data/haum_logs_2016-2023/_2016b/2016_11_15-12_12_57.log 2016-12-15 12:12:57     621 Transform start     076 076.xml   NA 2092.25 2008.00 0.3000000   13.26523465
# 1424 ../data/haum_logs_2016-2023/_2016b/2016_11_15-12_12_57.log 2016-12-15 12:12:57     677  Transform stop     076 076.xml   NA 2092.25 2008.00 0.2997736   13.26239605
# 1425 ../data/haum_logs_2016-2023/_2016b/2016_11_15-12_12_57.log 2016-12-15 12:12:57     774 Transform start     076 076.xml   NA 2092.25 2008.00 0.2999345   13.26239605
# 1426 ../data/haum_logs_2016-2023/_2016b/2016_11_15-12_12_57.log 2016-12-15 12:12:57     850  Transform stop     076 076.xml   NA 2092.25 2008.00 0.2997107   13.26223362
# 1427  ../data/haum_logs_2016-2023/_2016b/2016_11_15-12_2_57.log 2016-12-15 12:12:57  599916  Transform stop     076 076.xml   NA 2092.25 2008.00 0.2997771   13.26523465

## what it looks like now
# 1422 2016_11_15-12_02_57.log 2016-12-15 12:12:56  599671 Transform start     076 076.xml   NA 2092.25 2008.00 0.3000000   13.26874254
# 1423 2016_11_15-12_02_57.log 2016-12-15 12:12:57  599916  Transform stop     076 076.xml   NA 2092.25 2008.00 0.2997771   13.26523465
# 1424 2016_11_15-12_12_57.log 2016-12-15 12:12:57     621 Transform start     076 076.xml   NA 2092.25 2008.00 0.3000000   13.26523465
# 1425 2016_11_15-12_12_57.log 2016-12-15 12:12:57     677  Transform stop     076 076.xml   NA 2092.25 2008.00 0.2997736   13.26239605
# 1426 2016_11_15-12_12_57.log 2016-12-15 12:12:57     774 Transform start     076 076.xml   NA 2092.25 2008.00 0.2999345   13.26239605
# 1427 2016_11_15-12_12_57.log 2016-12-15 12:12:57     850  Transform stop     076 076.xml   NA 2092.25 2008.00 0.2997107   13.26223362

Events that only close (date.start is NA)

Timestamps repeat

Popups from glossar cannot be assigned to a specific artwork

Assign a case variable based on "time heuristic"

A moveevent does not record any change

Add moves to trace variable

Reading list

  • @Arizmendi2022 [$-$]
  • @Bannert2014 [x]
  • @Bousbia2010 [$-$]
  • @Cerezo2020
  • @GerjetsSchwan2021 [x]
  • @Goldhammer2020
  • @Guenther2007
  • @HuberBannert2023 [x]
  • @Kroehne2018
  • @SchwanGerjets2021 [x]
  • @vanderAalst2016 [Chap. 2, x]
  • @vanderAalst2016 [Chap. 3]
  • @vanderAalst2016 [Chap. 5, x]
  • @Wang2019