MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/06/02 through 04/12/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 648 1,786 2,434
Davis 1,243 166 1,409
Irvine 377 0 377
Los Angeles 5 348 353
Riverside 388 78 466
San Diego 337 112 449
San Francisco 127 0 127
Santa Barbara 159 52 211
Santa Cruz 170 165 335
LBL 0 59 59
LLL 0 37 37
Other - UC 27 257 284
CSL 0 115 115
CSU n/a 106 106
Other-Non-UC n/a 3,274 3,274
_______ ______ _____
3,481 6,555 10,036
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 268 740 7,231
2-4 a.m. 221 800 8,898
4-6 a.m. 179 616 5,507
6-8 a.m. 325 1,158 7,484
8-10 a.m. 1,355 5,425 38,636
10-12 a.m. 1,890 7,768 55,158
12-2 p.m. 1,689 6,346 42,727
2-4 p.m. 1,785 6,433 46,424
4-6 p.m. 1,215 4,750 32,489
6-8 p.m. 509 2,008 13,180
8-10 p.m. 312 1,360 8,358
10-12 p.m. 288 1,193 7,618
__________ __________ __________ _________________
Total: 10,036 38,597 273,710
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,529 5,907 7,436
Davis 4,708 1,491 6,199
Irvine 1,952 0 1,952
Los Angeles 31 844 875
Riverside 2,078 183 2,261
San Diego 810 299 1,109
San Francisco 363 0 363
Santa Barbara 651 76 727
Santa Cruz 2,034 517 2,551
LBL 0 64 64
LLL 0 88 88
Other - UC 14 676 690
CSL 0 174 174
CSU n/a 500 500
Other-Non-UC n/a 13,608 13,608
_______ ______ _____
14,170 24,427 38,597
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,301 40,420 51,721
Davis 31,883 8,143 40,026
Irvine 12,356 0 12,356
Los Angeles 156 5,827 5,983
Riverside 14,373 1,358 15,731
San Diego 4,371 2,022 6,393
San Francisco 5,101 0 5,101
Santa Barbara 6,638 1,114 7,752
Santa Cruz 4,951 4,631 9,582
LBL 0 588 588
LLL 0 1,081 1,081
Other - UC 85 5,772 5,857
CSL 0 1,236 1,236
CSU n/a 4,361 4,361
Other-Non-UC n/a 105,942 105,942
_______ ______ _____
91,215 182,495 273,710
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 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:16
Average session length (minutes:seconds) 16:03
Longest session recorded (minutes:seconds) 1075
Average number of searches completed per session 3.8
Retrievals per search - median 2.0
Retrievals per search - average 70.8
Retrievals per search - standard deviation 1429.2
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 65.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,207 36.9%
DISPLAY (excluding automatic displays) 33,731 33.5%
ACFIND 4 0.0%
BROWSE 182 0.2%
SELECT 105 0.1%
HELP 651 0.6%
EXPLAIN 612 0.6%
SET/RESET 1,952 1.9%
SHOW 216 0.2%
AT 2,269 2.3%
ADD ON (AND, OR, AND NOT) 1,374 1.4%
LOGON or LOGOFF 17,565 17.4%
COMMENT 1 0.0%
SAVE 462 0.5%
USE 541 0.5%
OTHER 3,956 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 5,438 14.1% 1,240 22.8% 11 80.0 333.2
AUTHOR 1,244 3.2% 278 22.3% 11 137.6 1125.3
CORPORATE AUTH 360 0.9% 136 37.8% 23 1063.5 8887.0
EXACT CA 19 0.0% 1 5.3% 3 9.1 16.3
TITLE WORD 7,817 20.2% 2,521 32.3% 4 93.4 1906.5
EXACT TITLE 7,706 19.9% 1,874 24.3% 2 16.5 134.5
TITLE -> TW 978 2.5% 262 26.8% 9 62.6 198.2
TITLE -> XT 1,068 2.8% 495 46.3% 1 13.7 108.8
SUBJECT 1,616 4.2% 534 33.0% 51 697.7 5531.5
EXACT SUBJECT 110 0.3% 26 23.6% 79 379.4 911.0
PERIODICAL 7,055 18.3% 1,691 24.0% 4 70.7 933.3
EXACT PE 2,505 6.5% 376 15.0% 3 25.7 303.9
RPE 3 0.0% 1 33.3% 1 1.0 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 41 0.1% 9 21.9% 35 1210.4 3985.6
DATE 484 1.3% 115 23.8% 3 62.2 360.9
FORM 250 0.6% 49 19.6% 21 132.1 591.1
NUMBER* 14 0.0% 4 28.6% 2 145.4 276.9
MUSIC* 5 0.0% 5 100% 0 0.0 0.0
SERIES 819 2.1% 288 35.2% 4 111.3 899.0
UNIFORM TITLE 5 0.0% 1 20.0% 142 369.0 553.0
Other indexes 1,087 2.8% 360 33.1% 1 9.7 91.9
* 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 1,757 4.8% 473 26.9% 3 146.7 2098.3
Single 35,017 95.2% 9,299 26.6% 4 91.3 1615.9
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 11 6.5% 2 18.2% 49 118.4 201.8
CORPORATE AUTH 3 1.8% 2 66.7% 538 538.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 106 62.4% 22 20.8% 60 193.5 531.3
EXACT SUBJECT 50 29.4% 5 10.0% 20 96.4 152.8
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 174 100% 31 17.8% 34 155.6 422.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.8%
BRIEF 63.1%
LONG 9.2%
MARC 5.6%
FIELDS 5.7%
TAG 2.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.0%
Ten most frequent errors:
1. NS command - no next screen 33.5%
2. First word of command is invalid 26.4%
3. FIND command with invalid index name 12.3%
4. DISPLAY command contains invalid word 4.7%
5. Search term missing from search command 2.4%
6. PS command - no previous screen 2.1%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command - no FIND results 1.4%
9. Command contains escape or arrow key 1.1%
10. KW search in database w/o KW index 1.0%
11. All others 13.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.6%
2. FIND 10.1%
3. Unrecognized term 7.0%
4. INDEXES 6.4%
5. COMMAND WORDS 4.7%
6. PASSWORDS 4.1%
7. DATABASES 2.9%
8. ADD-ON SEARCH 2.5%
9. LOCATE (PE DB) 2.5%
10. CATALOG 2.1%
11. All others 28.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.5%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 12.9%
4. DISPLAY command - middle of >1 screen 5.2%
5. DISPLAY command-first of >1 screen 3.2%
6. DISPLAY command-complete in one screen 2.7%
7. NS command - no next screen 2.4%
8. FIND command retrieves >1 book 2.1%
9. F/BR with index invalid in current DB 1.7%
10. TW search with zero results 1.7%
11. All others 29.2%
Ten most frequent SHOW requests:
1. HISTORY 43.3%
2. SEARCH 12.4%
3. GLOSSARY 9.0%
4. SETTINGS 7.0%
5. PSYCINFO NEWS 3.5%
6. MAIL STATUS 3.5%
7. IAC NEWS 2.5%
8. DATABASE NEWS 2.0%
9. LOCATION 1.5%
10. MAIL SETTINGS 1.5%
11. All others 13.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)