MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 73 829 902
Davis 435 16 451
Irvine 325 0 325
Los Angeles 31 275 306
Riverside 38 74 112
San Diego 62 272 334
San Francisco 237 0 237
Santa Barbara 51 189 240
Santa Cruz 53 110 163
LBL 0 133 133
LLL 0 84 84
Los Alamos n/a 0 0
Other - UC 0 31 31
U.S. Forestry 0
Other-Network UC n/a 665 665
_______ ______ _____
1,305 2,678 3,983
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 65 187 1,369
2-4 a.m. 71 280 3,654
4-6 a.m. 45 194 1,753
6-8 a.m. 139 609 6,788
8-10 a.m. 466 1,547 28,103
10-12 a.m. 746 2,002 19,684
12-2 p.m. 627 1,641 16,796
2-4 p.m. 779 1,928 21,360
4-6 p.m. 572 1,628 14,131
6-8 p.m. 253 724 9,405
8-10 p.m. 142 444 4,005
10-12 p.m. 78 258 2,496
__________ __________ __________ _________________
Total: 3,983 11,442 129,544
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 209 2,265 2,474
Davis 1,451 61 1,512
Irvine 996 0 996
Los Angeles 135 741 876
Riverside 74 181 255
San Diego 148 594 742
San Francisco 769 0 769
Santa Barbara 109 498 607
Santa Cruz 109 296 405
LBL 0 384 384
LLL 0 776 776
Los Alamos n/a 0 0
Other - UC 1 75 76
U.S. Forestry 0
Other-Network UC n/a 1,570 1,570
_______ ______ _____
4,001 7,441 11,442
Number of FIND commands by database
CC database 11,182
CCT database 260
Total number of FIND commands 11,442
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,193 35,073 37,266
Davis 14,386 630 15,016
Irvine 6,743 0 6,743
Los Angeles 949 7,390 8,339
Riverside 865 4,279 5,144
San Diego 1,283 5,844 7,127
San Francisco 10,205 0 10,205
Santa Barbara 1,453 5,691 7,144
Santa Cruz 2,008 3,653 5,661
LBL 0 5,324 5,324
LLL 0 8,308 8,308
Los Alamos n/a 0 0
Other - UC 0 1,357 1,357
U.S. Forestry 0
Other-Network UC n/a 11,910 11,910
_______ ______ _____
40,085 89,459 129,544
Number of Records Displayed by database:
CC database 104,376
CCT database 25,168
Total number of Records Displayed 129,544
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.6%
Percent of CCT sessions 4.4%
Percent of searches done in the CC database 97.7%
Percent of searches done in the CCT database 2.3%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.5
2.0 CC Database Statistics
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 184:24
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 428.0
Retrievals per search - standard deviation 3022.4
Percent of searches completed with 0 results 24.6%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 48.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,399 37.1%
DISPLAY (excluding automatic displays) 8,459 30.2%
HELP 266 0.9%
EXPLAIN 257 0.9%
SET/RESET 1,513 5.4%
SHOW 34 0.1%
ADD ON (AND, OR, AND NOT) 783 2.8%
LOGON or LOGOFF 4,777 17.0%
COMMENT 0 0.0%
SAVE 292 1.0%
USE 10 0.0%
OTHER 1,258 4.5%
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 AUTHOR 4,982 41.6% 779 15.6% 28 262.0 1485.6
TITLE WORD 3,625 30.3% 1,088 30.0% 18 775.3 4548.6
EXACT TITLE 143 1.2% 69 48.3% 3 229.9 939.8
JOURNAL 498 4.2% 192 38.6% 326 2610.6 6454.0
EXACT JOURNAL 611 5.1% 333 54.5% 46 1312.2 4805.3
SUBJECT CAT 102 0.9% 19 18.6% 11 47.9 99.6
SUBFILE 6 0.1% 0 0.0% 70 1014.2 2298.7
PUBLICATION TYPE 59 0.5% 6 10.2% 11 1119.4 7285.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 250 2.1% 49 19.6% 20 126.6 429.8
ADDED 630 5.3% 412 65.4% 19 30.4 39.0
PERIODICAL 421 3.5% 62 14.7% 4 69.5 669.7
EXACT PE 121 1.0% 12 9.9% 3 9.1 15.3
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
Other indexes 514 4.3% 158 30.7% 21 969.6 5318.8
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1,587 15.3% 673 42.4% 10 66.1 316.0
Single 8,762 84.7% 1,828 20.9% 29 663.4 3711.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.8%
SHORT 76.4%
LONG 6.3%
FIELDS 2.9%
PERIODICALS 8.2%
COMMENTS 0.0%
Other 1.4%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 81:44
Average number of searches completed per session 1.5
Retrievals per search - median 47.0
Retrievals per search - average 398.9
Retrievals per search - standard deviation 1543.5
Percent of searches completed with 0 results 21.5%
Percent of searches entered that are long 0.0%
Percent of long searches completed
(includes partial results) 0.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 258 21.8%
DISPLAY (excluding automatic displays) 424 35.8%
HELP 84 7.1%
EXPLAIN 63 5.3%
SET/RESET 106 8.9%
SHOW 11 0.9%
ADD ON (AND, OR, AND NOT) 2 0.2%
LOGON or LOGOFF 183 15.4%
COMMENT 0 0.0%
SAVE 3 0.3%
USE 0 0.0%
OTHER 52 4.4%
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:
JOURNAL 140 49.3% 37 26.4% 137 358.6 613.9
EXACT JOURNAL 57 20.1% 14 24.6% 141 272.4 403.1
SUBJECT CAT 18 6.3% 0 0.0% 1,387 3043.2 5029.3
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 23 8.1% 0 0.0% 356 588.1 604.7
ADDED 3 1.1% 0 0.0% 1 1.3 0.6
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
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
Other indexes 43 15.1% 4 9.3% 2 7.3 13.7
By number of indexes:
Multiple 26 10.1% 0 0.0% 351 520.4 598.6
Single 232 89.9% 55 23.7% 100 509.5 1840.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.0%
ISSUES 44.4%
SHORT 16.1%
LONG 19.8%
PERIODICALS 13.6%
COMMENTS 0.0%
Other 1.0%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 31.9%
2. First word of command is invalid 28.0%
3. FIND command with invalid index name 8.7%
4. Index invalid in current database 4.0%
5. DISPLAY command contains invalid word 2.7%
6. Max. # of ports to a Z39 db are in use 2.6%
7. Search term missing from search command 2.0%
8. D ABS command in database w/o abstracts 2.0%
9. DISPLAY command - no FIND results 1.8%
10. PS command - no previous screen 1.8%
11. All others 14.6%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 15.6%
2. FIND (CC DB) 11.9%
3. CC INDEXES 10.3%
4. LOCATE (ARTICLE DBS) 6.3%
5. COMMANDS 4.1%
6. Unrecognized term 3.8%
7. MAIL 3.4%
8. 5360 3.4%
9. ADD-ON SEARCH 2.8%
10. CC DATABASE 2.8%
11. All others 35.6%
Ten most frequent HELP situations:
1. First word of command is invalid 15.4%
2. Help requested from START CC command 12.8%
3. FIND command with invalid index name 8.2%
4. F/BR with index invalid in current DB 7.2%
5. Help requested from SET DB command 6.9%
6. DISPLAY command - middle of >1 screen 6.0%
7. FIND command retrieves >1 book 5.2%
8. FIND command with zero results 4.8%
9. DISPLAY command-first of >1 screen 4.5%
10. DISPLAY command-complete in one screen 2.8%
11. All others 26.3%
Ten most frequent SHOW requests:
1. HISTORY 35.6%
2. SYSTEM NEWS 15.6%
3. SEARCH 13.3%
4. LIBRARY NEWS 4.4%
5. CC GLOSSARY 4.4%
6. SC LIST (CC DBS) 4.4%
7. MAIL STATUS 4.4%
8. UCI NEWS 2.2%
9. TIMEOUT SETTING 2.2%
10. MAIL SETTINGS 2.2%
11. All others 11.1%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)