MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 03/10/01 through 03/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 111 819 930
Davis 474 29 503
Irvine 337 0 337
Los Angeles 76 277 353
Riverside 51 90 141
San Diego 42 240 282
San Francisco 161 0 161
Santa Barbara 23 126 149
Santa Cruz 37 85 122
LBL 0 87 87
LLL 0 56 56
Los Alamos n/a 0 0
Other - UC 1 57 58
U.S. Forestry 0
Other-Network UC n/a 642 642
_______ ______ _____
1,313 2,508 3,821
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 52 117 1,617
2-4 a.m. 57 200 2,055
4-6 a.m. 42 191 960
6-8 a.m. 97 518 3,768
8-10 a.m. 430 1,213 9,407
10-12 a.m. 670 1,784 19,843
12-2 p.m. 653 1,551 14,415
2-4 p.m. 738 1,982 14,881
4-6 p.m. 556 1,577 13,665
6-8 p.m. 260 692 6,033
8-10 p.m. 156 532 9,053
10-12 p.m. 110 462 2,983
__________ __________ __________ _________________
Total: 3,821 10,819 98,680
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 282 2,172 2,454
Davis 1,331 77 1,408
Irvine 888 0 888
Los Angeles 220 765 985
Riverside 96 268 364
San Diego 118 869 987
San Francisco 422 0 422
Santa Barbara 70 396 466
Santa Cruz 78 284 362
LBL 0 245 245
LLL 0 426 426
Los Alamos n/a 0 0
Other - UC 2 166 168
U.S. Forestry 0
Other-Network UC n/a 1,644 1,644
_______ ______ _____
3,507 7,312 10,819
Number of FIND commands by database
CC database 10,608
CCT database 211
Total number of FIND commands 10,819
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,827 21,770 25,597
Davis 11,772 670 12,442
Irvine 4,770 0 4,770
Los Angeles 1,286 8,401 9,687
Riverside 556 1,784 2,340
San Diego 872 7,087 7,959
San Francisco 4,665 0 4,665
Santa Barbara 389 4,224 4,613
Santa Cruz 544 2,411 2,955
LBL 0 2,598 2,598
LLL 0 2,808 2,808
Los Alamos n/a 0 0
Other - UC 0 1,344 1,344
U.S. Forestry 0
Other-Network UC n/a 16,902 16,902
_______ ______ _____
28,681 69,999 98,680
Number of Records Displayed by database:
CC database 91,416
CCT database 7,264
Total number of Records Displayed 98,680
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 98.0%
Percent of searches done in the CCT database 2.0%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 3.8
2.0 CC Database Statistics
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Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 593:18
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 451.9
Retrievals per search - standard deviation 4700.3
Percent of searches completed with 0 results 23.4%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,858 37.8%
DISPLAY (excluding automatic displays) 7,440 28.6%
HELP 262 1.0%
EXPLAIN 262 1.0%
SET/RESET 1,530 5.9%
SHOW 53 0.2%
ADD ON (AND, OR, AND NOT) 750 2.9%
LOGON or LOGOFF 4,435 17.0%
COMMENT 0 0.0%
SAVE 339 1.3%
USE 10 0.0%
OTHER 1,110 4.3%
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 4,650 42.2% 714 15.4% 28 188.8 969.8
TITLE WORD 3,633 33.0% 1,050 28.9% 13 940.4 8669.5
EXACT TITLE 166 1.5% 69 41.6% 5 97.6 613.0
JOURNAL 409 3.7% 152 37.2% 288 2532.0 6255.9
EXACT JOURNAL 321 2.9% 185 57.6% 163 3185.2 8865.3
SUBJECT CAT 52 0.5% 4 7.7% 19 104.6 306.7
SUBFILE 36 0.3% 1 2.8% 28 270.7 905.0
PUBLICATION TYPE 38 0.3% 10 26.3% 9 141.5 494.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 149 1.4% 30 20.1% 13 101.9 353.0
ADDED 344 3.1% 237 68.9% 12 20.2 30.4
PERIODICAL 378 3.4% 57 15.1% 4 80.1 773.6
EXACT PE 133 1.2% 13 9.8% 2 10.7 25.0
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 712 6.5% 201 28.2% 26 804.9 4182.8
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 1,171 11.9% 477 40.7% 7 55.8 288.3
Single 8,661 88.1% 1,763 20.4% 27 675.4 5776.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 78.6%
LONG 4.8%
FIELDS 1.8%
PERIODICALS 8.4%
COMMENTS 0.0%
Other 1.3%
2.1 CCT Database Statistics
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Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 261:27
Average number of searches completed per session 1.2
Retrievals per search - median 20.0
Retrievals per search - average 217.4
Retrievals per search - standard deviation 912.6
Percent of searches completed with 0 results 41.2%
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 211 20.2%
DISPLAY (excluding automatic displays) 369 35.4%
HELP 102 9.8%
EXPLAIN 33 3.2%
SET/RESET 124 11.9%
SHOW 17 1.6%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 150 14.4%
COMMENT 0 0.0%
SAVE 1 0.1%
USE 1 0.1%
OTHER 35 3.4%
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 144 68.2% 69 47.9% 86 465.8 1441.4
EXACT JOURNAL 57 27.0% 15 26.3% 115 259.7 541.6
SUBJECT CAT 0 0.0% 0 0.0% 0 0.0 0.0
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
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 10 4.7% 3 30.0% 2 3.7 3.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 211 100% 87 41.2% 73 369.9 1168.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
ISSUES 41.5%
SHORT 7.6%
LONG 43.5%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 0.3%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 30.1%
2. First word of command is invalid 28.6%
3. FIND command with invalid index name 10.1%
4. Index invalid in current database 4.7%
5. Max. # of ports to a Z39 db are in use 3.6%
6. Search term missing from search command 2.4%
7. DISPLAY command contains invalid word 2.0%
8. DISPLAY command - no FIND results 1.9%
9. PS command - no previous screen 1.7%
10. D ABS command in database w/o abstracts 1.3%
11. All others 13.7%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 17.6%
2. FIND (CC DB) 14.9%
3. LOCATE (ARTICLE DBS) 13.2%
4. CC INDEXES 7.8%
5. Unrecognized term 7.5%
6. COMMANDS 5.1%
7. CC DATABASE 3.4%
8. FIND (CCT DB) 3.4%
9. ADD-ON SEARCH 2.4%
10. Unrecognized term-reminders off 2.0%
11. All others 22.7%
Ten most frequent HELP situations:
1. Help requested from START CC command 15.5%
2. First word of command is invalid 15.3%
3. FIND command with invalid index name 9.3%
4. F/BR with index invalid in current DB 8.2%
5. Help requested from SET DB command 6.5%
6. DISPLAY command-first of >1 screen 5.5%
7. FIND command with zero results 4.1%
8. DISPLAY command-complete in one screen 4.1%
9. DISPLAY command - middle of >1 screen 4.1%
10. NS command - no next screen 3.8%
11. All others 23.7%
Ten most frequent SHOW requests:
1. HISTORY 42.9%
2. SYSTEM NEWS 14.3%
3. CC GLOSSARY 10.7%
4. SEARCH 7.1%
5. LIBRARY NEWS 5.4%
6. CC NEWS 5.4%
7. CC SETTINGS 3.6%
8. SC LIST (CC DBS) 3.6%
9. Invalid term 1.8%
10. CCT SETTINGS 1.8%
11. All others 3.6%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)