MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/13/02 through 04/19/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 606 1,946 2,552
Davis 1,227 113 1,340
Irvine 408 0 408
Los Angeles 8 356 364
Riverside 347 68 415
San Diego 276 110 386
San Francisco 125 0 125
Santa Barbara 254 83 337
Santa Cruz 153 143 296
LBL 0 48 48
LLL 0 42 42
Other - UC 18 250 268
CSL 0 85 85
CSU n/a 96 96
Other-Non-UC n/a 3,279 3,279
_______ ______ _____
3,422 6,619 10,041
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 256 793 4,822
2-4 a.m. 223 621 6,011
4-6 a.m. 157 423 4,208
6-8 a.m. 415 1,176 9,090
8-10 a.m. 1,382 5,583 37,056
10-12 a.m. 1,784 7,395 49,303
12-2 p.m. 1,705 7,537 51,393
2-4 p.m. 1,794 7,006 51,302
4-6 p.m. 1,214 5,100 34,215
6-8 p.m. 443 1,834 15,546
8-10 p.m. 327 1,179 8,852
10-12 p.m. 341 1,520 12,748
__________ __________ __________ _________________
Total: 10,041 40,167 284,546
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,472 6,327 7,799
Davis 5,008 886 5,894
Irvine 2,286 0 2,286
Los Angeles 43 854 897
Riverside 2,560 244 2,804
San Diego 857 275 1,132
San Francisco 398 0 398
Santa Barbara 1,213 139 1,352
Santa Cruz 1,573 953 2,526
LBL 0 44 44
LLL 0 61 61
Other - UC 18 614 632
CSL 0 158 158
CSU n/a 542 542
Other-Non-UC n/a 13,642 13,642
_______ ______ _____
15,428 24,739 40,167
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,776 42,163 54,939
Davis 37,657 3,738 41,395
Irvine 15,451 0 15,451
Los Angeles 288 6,639 6,927
Riverside 10,957 2,018 12,975
San Diego 5,159 2,508 7,667
San Francisco 3,527 0 3,527
Santa Barbara 9,588 1,587 11,175
Santa Cruz 7,102 4,406 11,508
LBL 0 403 403
LLL 0 404 404
Other - UC 74 4,763 4,837
CSL 0 1,509 1,509
CSU n/a 6,288 6,288
Other-Non-UC n/a 105,541 105,541
_______ ______ _____
102,579 181,967 284,546
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 1.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 11:12
Average session length (minutes:seconds) 15:58
Longest session recorded (minutes:seconds) 738:37
Average number of searches completed per session 4.0
Retrievals per search - median 2.0
Retrievals per search - average 56.6
Retrievals per search - standard deviation 720.3
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 65.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 38,509 36.8%
DISPLAY (excluding automatic displays) 35,404 33.8%
ACFIND 7 0.0%
BROWSE 222 0.2%
SELECT 151 0.1%
HELP 671 0.6%
EXPLAIN 619 0.6%
SET/RESET 1,945 1.9%
SHOW 182 0.2%
AT 2,794 2.7%
ADD ON (AND, OR, AND NOT) 1,637 1.6%
LOGON or LOGOFF 17,458 16.7%
COMMENT 0 0.0%
SAVE 681 0.7%
USE 571 0.5%
OTHER 3,902 3.7%
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 5,682 14.2% 1,276 22.5% 11 76.5 344.1
AUTHOR 1,326 3.3% 382 28.8% 10 105.4 352.9
CORPORATE AUTH 396 1.0% 136 34.3% 19 701.4 5827.6
EXACT CA 40 0.1% 5 12.5% 3 17.1 53.6
TITLE WORD 8,205 20.4% 2,605 31.7% 4 41.3 219.6
EXACT TITLE 7,267 18.1% 1,802 24.8% 2 16.9 123.3
TITLE -> TW 1,049 2.6% 238 22.7% 7 44.1 96.4
TITLE -> XT 1,292 3.2% 611 47.3% 2 10.1 71.4
SUBJECT 1,755 4.4% 605 34.5% 40 391.6 1419.9
EXACT SUBJECT 119 0.3% 20 16.8% 109 576.5 1495.8
PERIODICAL 7,484 18.6% 1,760 23.5% 5 95.9 891.1
EXACT PE 2,692 6.7% 425 15.8% 2 20.8 285.5
RPE 2 0.0% 0 0.0% 13 12.5 7.8
XRP 3 0.0% 1 33.3% 8 7.5 4.9
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 56 0.1% 8 14.3% 36 170.9 341.5
DATE 470 1.2% 96 20.4% 2 37.4 270.0
FORM 538 1.3% 128 23.8% 8 232.3 2720.4
NUMBER* 20 0.0% 9 45.0% 2 17.5 33.8
MUSIC* 5 0.0% 4 80.0% 1 1.0 0.0
SERIES 790 2.0% 245 31.0% 4 83.6 348.6
UNIFORM TITLE 34 0.1% 11 32.4% 8 501.7 939.9
Other indexes 927 2.3% 385 41.5% 1 25.2 306.5
* 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 1,961 5.2% 491 25.0% 3 49.6 242.9
Single 36,109 94.8% 9,744 27.0% 4 80.8 879.2
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 10 4.9% 2 20.0% 8 448.6 1208.4
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 180 87.8% 36 20.0% 52 155.3 354.6
EXACT SUBJECT 15 7.3% 0 0.0% 21 135.2 215.8
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 213 100% 39 18.3% 39 161.9 414.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.6%
BRIEF 67.7%
LONG 8.2%
MARC 4.7%
FIELDS 2.6%
TAG 2.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.6%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 6.8%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 25.3%
3. FIND command with invalid index name 13.9%
4. DISPLAY command contains invalid word 4.2%
5. Search term missing from search command 3.0%
6. PS command - no previous screen 2.1%
7. Valid command at an inappropriate time 1.7%
8. DISPLAY command - no FIND results 1.5%
9. Command contains escape or arrow key 1.2%
10. KW search in database w/o KW index 1.1%
11. All others 12.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.9%
2. FIND 14.1%
3. COMMAND WORDS 6.6%
4. INDEXES 5.5%
5. Unrecognized term 4.7%
6. PASSWORDS 4.0%
7. DATABASES 2.4%
8. NRLF 2.1%
9. LOCATE (PE DB) 2.1%
10. 1773 1.6%
11. All others 27.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.2%
2. First word of command is invalid 16.2%
3. FIND command with invalid index name 14.1%
4. DISPLAY command - middle of >1 screen 4.2%
5. DISPLAY command-first of >1 screen 2.6%
6. DISPLAY command-complete in one screen 2.5%
7. TW search with zero results 2.4%
8. NS command - no next screen 2.1%
9. F/BR with index invalid in current DB 2.0%
10. FIND command retrieves >1 book 1.9%
11. All others 28.8%
Ten most frequent SHOW requests:
1. HISTORY 47.8%
2. SEARCH 14.6%
3. GLOSSARY 12.9%
4. SETTINGS 10.7%
5. DATABASE NEWS 1.7%
6. NEWS 1.7%
7. MAIL STATUS 1.1%
8. SYSTEMS INFORMATION 1.1%
9. INSPEC NEWS 0.6%
10. PSYCINFO STATISTICS 0.6%
11. All others 7.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)