掲示板 Forums - Schedule statistics/graphs are a bit weird since this week

For many of my schedules, the "mastery stars over time" graph has been weird since the most recent week's update (adding week of Jul 20, according to the weekly chart's x axis tick labels): it shows dramatic decreases or increases in number of terms and mastery stars that don't seem connected to reality. One example of this, cropped a bit:

I do not actually have over three million mastery stars, nor have I halved the number of known terms in that schedule.

Hello, I have the same issue!

Stats for many of my schedules have dropped for the past two weeks, even though I keep reviewing them and I am learning new items every day.

Pretty much across the board for me:

• Vocab: "A Review" (dives in weekly graphs after Jul 13)
  • curiously, "B Listen" which draws only the Listening vector from the same sources seems fine.
• Kanji: "Z3 Intermediate Kanji" (dives in weekly graphs after Jul 13)
• Grammar: "C Review" (# terms jumps after Jul 13 in weekly graph; monthly dives in Jul and bounces in Aug)
• Sentences: "E Review" (Structure dives after Jul 13 in weekly graph, while Overall jumps up on Aug 03; monthly dives in Jul and bounces in Aug)
  • I added another list to this schedule around the week of Aug 03, containing almost-entirely unstudied terms.

For Grammar and Sentences schedules, the recent "# terms" bars seem to reflect the total number of terms in the schedule; prior to Jul 13, I think they reflected studied terms (which makes more sense, and is still what the words schedules do when unaffected by whatever else is going on here).

Hello,

Sorry for the delay, as I was on vacation. Here are some additional information about my schedules, if they can help you pinpoint the issue.

Many of my affected schedules are schedules that have been merged:

- Vocabulary schedule "かな" , merged a long time ago from the Renshuu Hiragana and Katakana schedules.

- Vocabulary schedules "Vocabulaire Kanji to Kana (1-200)", "Words for Beginner Japanese (N5)", merged recently (I would say on the middle of July, but I don't remember the exact date)

- Kanji schedule "Kanji to Kana 1-200", also merged recently in July

But I also have unmerged schedules with this issue:

- Vocabulary schedule "みんなの日本語", which is the lesson-based schedule from Renshuu

- Vocabulary schedule "みんなの日本語 - Voc. de référence"

- Vocabulary schedule "NHK World - やさしい日本語"

- Sentence schedule "Beginner Sentences (N5)"

- Grammar schedule "Verb Conjugations", in which only the "Base ->Conjugated" vector seems to show the issue.

- Vocabulary schedule "Vocabulaire Kanji to Kana (201-300)" has the Meaning->Kana vector going off the charts with very high values, even though it contains only 75 words studied mainly with Kanji vectors.

All affected schedules have strange graphs after July 13th, just like ハルヒロ's graphs.

Hello, thank you for looking into this issue!

Data for the latest week in weekly graphs looks seems all right to me:

- The number of terms in the graph matchs the number of studied words in the Overview tab (or is close to it, for schedules I'm currently learning).

- Mastery values for individual vectors resumed following the trend they had before the July 20th drop/strange values.

Thanks for the updates.

I am looking, but it appears that the data that would be required to rebuild the missing weeks is unfortunately not present. This is not due to a bug or anything - it's simply that there is only so much raw data that I can hold onto, and the data for the previous weeks was removed in order to keep the system running smoothly.