MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/14/01 through 04/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,083 2,775 3,858
Davis 2,099 240 2,339
Irvine 761 0 761
Los Angeles 14 638 652
Riverside 590 115 705
San Diego 408 197 605
San Francisco 322 0 322
Santa Barbara 329 194 523
Santa Cruz 342 166 508
LBL 0 106 106
LLL 0 77 77
Other - UC 26 253 279
CSL 0 128 128
CSU n/a 190 190
Other-Non-UC n/a 4,339 4,339
_______ ______ _____
5,974 9,418 15,392
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 272 768 7,413
2-4 a.m. 174 736 6,467
4-6 a.m. 273 917 8,343
6-8 a.m. 486 1,522 14,301
8-10 a.m. 1,963 6,674 51,951
10-12 a.m. 2,856 9,733 71,391
12-2 p.m. 2,647 9,827 65,076
2-4 p.m. 3,028 10,983 80,936
4-6 p.m. 2,099 7,598 56,151
6-8 p.m. 770 2,284 17,378
8-10 p.m. 489 1,394 9,665
10-12 p.m. 335 1,033 8,131
__________ __________ __________ _________________
Total: 15,392 53,469 397,203
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,271 8,702 11,973
Davis 8,972 664 9,636
Irvine 3,447 0 3,447
Los Angeles 17 2,048 2,065
Riverside 1,971 246 2,217
San Diego 1,050 278 1,328
San Francisco 1,030 0 1,030
Santa Barbara 1,136 397 1,533
Santa Cruz 1,731 534 2,265
LBL 0 115 115
LLL 0 220 220
Other - UC 56 628 684
CSL 0 334 334
CSU n/a 764 764
Other-Non-UC n/a 15,858 15,858
_______ ______ _____
22,681 30,788 53,469
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25,572 63,352 88,924
Davis 48,337 2,786 51,123
Irvine 20,751 0 20,751
Los Angeles 31 18,630 18,661
Riverside 12,986 2,403 15,389
San Diego 5,271 3,054 8,325
San Francisco 8,952 0 8,952
Santa Barbara 11,128 5,109 16,237
Santa Cruz 10,120 2,839 12,959
LBL 0 1,016 1,016
LLL 0 5,077 5,077
Other - UC 131 4,289 4,420
CSL 0 2,684 2,684
CSU n/a 6,957 6,957
Other-Non-UC n/a 135,728 135,728
_______ ______ _____
143,279 253,924 397,203
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:34
Average session length (minutes:seconds) 14:00
Longest session recorded (minutes:seconds) 710:37
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 58.9
Retrievals per search - standard deviation 739.0
Percent of searches completed with 0 results 27.2%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 61.2%
Commands entered, by type, excluding errors:
Total Percentage
FIND 51,729 35.6%
DISPLAY (excluding automatic displays) 48,403 33.3%
ACFIND 15 0.0%
BROWSE 395 0.3%
SELECT 262 0.2%
HELP 1,056 0.7%
EXPLAIN 1,491 1.0%
SET/RESET 3,766 2.6%
SHOW 354 0.2%
AT 3,485 2.4%
ADD ON (AND, OR, AND NOT) 1,708 1.2%
LOGON or LOGOFF 24,777 17.0%
COMMENT 1 0.0%
SAVE 933 0.6%
USE 1,114 0.8%
OTHER 5,878 4.0%
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 8,525 15.6% 2,118 24.8% 10 91.5 492.9
AUTHOR 1,940 3.6% 481 24.8% 13 102.2 547.9
CORPORATE AUTH 585 1.1% 251 42.9% 16 514.7 2294.6
EXACT CA 3 0.0% 1 33.3% 53 52.5 72.8
TITLE WORD 15,786 28.9% 4,576 29.0% 3 36.5 647.3
EXACT TITLE 7,292 13.4% 2,194 30.1% 2 24.2 175.2
TITLE -> TW 1,266 2.3% 295 23.3% 8 99.2 1435.2
TITLE -> XT 1,422 2.6% 595 41.8% 1 18.8 206.8
SUBJECT 2,922 5.4% 1,102 37.7% 46 428.3 2291.6
EXACT SUBJECT 131 0.2% 36 27.5% 57 400.9 1123.5
PERIODICAL 8,136 14.9% 1,710 21.0% 4 82.0 1218.3
EXACT PE 3,262 6.0% 562 17.2% 2 18.4 113.7
RPE 2 0.0% 0 0.0% 3 3.0 1.4
XRP 1 0.0% 0 0.0% 5 5.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 51 0.1% 7 13.7% 60 152.0 351.6
DATE 702 1.3% 204 29.1% 3 79.4 1228.5
FORM 622 1.1% 149 24.0% 18 197.6 1316.8
NUMBER* 35 0.1% 16 45.7% 2 35.9 90.1
MUSIC* 65 0.1% 44 67.7% 34 376.1 961.8
SERIES 1,004 1.8% 338 33.7% 5 81.9 363.9
UNIFORM TITLE 8 0.0% 5 62.5% 7 7.7 4.0
Other indexes 776 1.4% 314 40.5% 1 26.8 265.2
* 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 3,510 6.9% 1,043 29.7% 3 64.4 1352.9
Single 47,349 93.1% 12,871 27.2% 4 82.2 815.2
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 54 14.4% 15 27.8% 3 71.7 147.6
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 308 82.4% 76 24.7% 26 202.9 1121.0
EXACT SUBJECT 11 2.9% 2 18.2% 104 544.8 1152.3
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.3% 0 0.0% 20 20.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 374 100% 93 24.9% 24 195.0 1041.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
BRIEF 65.2%
LONG 10.7%
MARC 6.5%
FIELDS 2.6%
TAG 2.5%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 30.0%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 12.5%
4. DISPLAY command contains invalid word 5.0%
5. Search term missing from search command 2.5%
6. Max. # of ports to a Z39 db are in use 2.2%
7. DISPLAY command - no FIND results 1.9%
8. KW search in database w/o KW index 1.9%
9. PS command - no previous screen 1.8%
10. Valid command at an inappropriate time 1.6%
11. All others 15.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.5%
2. Unrecognized term 9.7%
3. FIND 9.4%
4. COMMAND WORDS 4.5%
5. INDEXES 4.4%
6. PASSWORDS 2.7%
7. DISPLAY 2.1%
8. DATABASES 1.9%
9. FIND LOCATION 1.7%
10. CATALOG 1.6%
11. All others 39.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.3%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 9.5%
4. NS of SHOW/EXP command-no next screen 3.5%
5. DISPLAY command - middle of >1 screen 2.9%
6. SHOW command with invalid modifier 2.7%
7. NS command - no next screen 2.7%
8. Valid command at an inappropriate time 2.6%
9. DISPLAY command-complete in one screen 2.5%
10. DISPLAY command-first of >1 screen 2.2%
11. All others 34.7%
Ten most frequent SHOW requests:
1. HISTORY 39.1%
2. SEARCH 13.1%
3. GLOSSARY 5.5%
4. SYSTEM NEWS 4.1%
5. SETTINGS 3.2%
6. LIBRARY NEWS 2.3%
7. DATABASE NEWS 2.0%
8. LOCAL INFORMATION 1.7%
9. MAIL STATUS 1.7%
10. INSPEC LOADING STATISTICS 1.5%
11. All others 25.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)