MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 03/23/02 through 03/29/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 318 1,358 1,676
Davis 773 106 879
Irvine 187 0 187
Los Angeles 6 300 306
Riverside 235 38 273
San Diego 210 141 351
San Francisco 138 0 138
Santa Barbara 116 67 183
Santa Cruz 138 126 264
LBL 0 45 45
LLL 0 33 33
Other - UC 27 107 134
CSL 0 90 90
CSU n/a 69 69
Other-Non-UC n/a 2,679 2,679
_______ ______ _____
2,148 5,159 7,307
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 159 478 8,029
2-4 a.m. 129 504 5,346
4-6 a.m. 150 520 3,391
6-8 a.m. 320 1,103 7,608
8-10 a.m. 1,057 3,859 35,932
10-12 a.m. 1,452 5,786 37,303
12-2 p.m. 1,402 5,284 48,787
2-4 p.m. 1,249 4,544 39,517
4-6 p.m. 743 2,969 23,940
6-8 p.m. 262 1,184 10,131
8-10 p.m. 199 902 6,378
10-12 p.m. 185 619 6,584
__________ __________ __________ _________________
Total: 7,307 27,752 232,946
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 868 4,577 5,445
Davis 3,260 815 4,075
Irvine 823 0 823
Los Angeles 15 1,021 1,036
Riverside 1,337 69 1,406
San Diego 673 320 993
San Francisco 291 0 291
Santa Barbara 606 116 722
Santa Cruz 763 295 1,058
LBL 0 43 43
LLL 0 109 109
Other - UC 31 395 426
CSL 0 163 163
CSU n/a 268 268
Other-Non-UC n/a 10,894 10,894
_______ ______ _____
8,667 19,085 27,752
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,515 38,672 45,187
Davis 20,785 2,987 23,772
Irvine 9,523 0 9,523
Los Angeles 144 7,332 7,476
Riverside 6,872 871 7,743
San Diego 15,796 4,156 19,952
San Francisco 1,959 0 1,959
Santa Barbara 4,934 600 5,534
Santa Cruz 5,747 3,177 8,924
LBL 0 316 316
LLL 0 664 664
Other - UC 312 3,211 3,523
CSL 0 1,088 1,088
CSU n/a 2,464 2,464
Other-Non-UC n/a 94,821 94,821
_______ ______ _____
72,587 160,359 232,946
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 2.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 3.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:15
Average session length (minutes:seconds) 16:29
Longest session recorded (minutes:seconds) 1210
Average number of searches completed per session 3.8
Retrievals per search - median 2.0
Retrievals per search - average 73.5
Retrievals per search - standard deviation 2622.8
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 64.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 26,822 36.2%
DISPLAY (excluding automatic displays) 25,443 34.3%
ACFIND 3 0.0%
BROWSE 143 0.2%
SELECT 122 0.2%
HELP 344 0.5%
EXPLAIN 380 0.5%
SET/RESET 1,527 2.1%
SHOW 128 0.2%
AT 1,937 2.6%
ADD ON (AND, OR, AND NOT) 907 1.2%
LOGON or LOGOFF 12,424 16.8%
COMMENT 0 0.0%
SAVE 557 0.8%
USE 507 0.7%
OTHER 2,903 3.9%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 4,044 14.4% 970 24.0% 10 74.2 336.9
AUTHOR 825 2.9% 194 23.5% 12 118.9 913.7
CORPORATE AUTH 260 0.9% 88 33.8% 22 480.4 1686.0
EXACT CA 10 0.0% 3 30.0% 3 161.4 372.3
TITLE WORD 5,624 20.0% 1,748 31.1% 4 53.9 858.3
EXACT TITLE 4,243 15.1% 1,263 29.8% 2 25.7 243.6
TITLE -> TW 649 2.3% 167 25.7% 7 36.6 86.7
TITLE -> XT 695 2.5% 353 50.8% 1 10.3 108.6
SUBJECT 929 3.3% 305 32.8% 33 450.4 2462.6
EXACT SUBJECT 103 0.4% 20 19.4% 57 262.7 755.0
PERIODICAL 5,925 21.0% 1,263 21.3% 4 53.5 644.9
EXACT PE 2,345 8.3% 351 15.0% 2 16.0 151.1
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 36 0.1% 3 8.3% 72 22392.8 71717.9
DATE 322 1.1% 61 18.9% 6 82.9 417.7
FORM 500 1.8% 113 22.6% 6 162.4 1396.1
NUMBER* 10 0.0% 6 60.0% 26 25.3 27.4
MUSIC* 18 0.1% 6 33.3% 11 17.4 15.5
SERIES 647 2.3% 209 32.3% 3 49.5 153.9
UNIFORM TITLE 5 0.0% 0 0.0% 3,508 2806.6 1568.4
Other indexes 984 3.5% 558 56.7% 1 24.7 459.3
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 1,547 5.8% 379 24.5% 4 135.9 1733.7
Single 25,005 94.2% 6,902 27.6% 4 101.0 3199.4
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 6 5.3% 1 16.7% 2 138.2 305.1
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 99 86.8% 16 16.2% 22 242.2 950.7
EXACT SUBJECT 8 7.0% 2 25.0% 79 1089.2 2488.6
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.9% 0 0.0% 4 4.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 140 100% 23 16.4% 15 237.0 978.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.8%
BRIEF 65.3%
LONG 10.2%
MARC 5.2%
FIELDS 3.5%
TAG 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.3%
Ten most frequent errors:
1. NS command - no next screen 34.9%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 10.9%
4. DISPLAY command contains invalid word 4.7%
5. PS command - no previous screen 2.8%
6. Search term missing from search command 2.1%
7. DISPLAY command - no FIND results 2.0%
8. KW search in database w/o KW index 1.1%
9. Valid command at an inappropriate time 1.0%
10. Index invalid in current database 1.0%
11. All others 14.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.4%
2. FIND 16.3%
3. Unrecognized term 7.4%
4. COMMAND WORDS 6.8%
5. INDEXES 5.5%
6. PASSWORDS 3.7%
7. DISPLAY 2.4%
8. DISSERTATIONS 2.1%
9. NRLF 2.1%
10. ADD-ON SEARCH 1.8%
11. All others 33.4%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 17.3%
2. First word of command is invalid 13.4%
3. FIND command with invalid index name 10.9%
4. DISPLAY command-first of >1 screen 3.9%
5. NS command - no next screen 3.3%
6. TW search with zero results 2.8%
7. DISPLAY command - last of >1 screen 2.6%
8. DISPLAY command - middle of >1 screen 2.3%
9. DISPLAY command-complete in one screen 2.2%
10. PE display complete in one screen 2.1%
11. All others 39.2%
Ten most frequent SHOW requests:
1. HISTORY 53.3%
2. SEARCH 6.6%
3. GLOSSARY 5.7%
4. LAUC NEWS 4.9%
5. PSYCINFO NEWS 4.1%
6. TIME 4.1%
7. SETTINGS 3.3%
8. TERMINAL 2.5%
9. UCB INFORMATION 1.6%
10. 0615 1.6%
11. All others 12.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)