MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 11/24/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 77 534 611
Davis 286 17 303
Irvine 175 0 175
Los Angeles 1 194 195
Riverside 17 76 93
San Diego 38 170 208
San Francisco 148 0 148
Santa Barbara 4 107 111
Santa Cruz 7 57 64
LBL 0 122 122
LLL 0 41 41
Los Alamos n/a 0 0
Other - UC 0 58 58
U.S. Forestry 0
Other-Network UC n/a 507 507
_______ ______ _____
753 1,883 2,636
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 35 125 720
2-4 a.m. 31 99 8,382
4-6 a.m. 31 96 1,037
6-8 a.m. 74 228 2,686
8-10 a.m. 287 709 5,122
10-12 a.m. 543 1,310 11,081
12-2 p.m. 417 1,159 10,829
2-4 p.m. 508 1,398 12,252
4-6 p.m. 300 781 8,071
6-8 p.m. 188 435 3,769
8-10 p.m. 133 357 3,205
10-12 p.m. 89 293 2,328
__________ __________ __________ _________________
Total: 2,636 6,990 69,482
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 305 1,578 1,883
Davis 825 34 859
Irvine 545 0 545
Los Angeles 1 502 503
Riverside 27 211 238
San Diego 118 435 553
San Francisco 408 0 408
Santa Barbara 9 322 331
Santa Cruz 15 174 189
LBL 0 254 254
LLL 0 120 120
Los Alamos n/a 0 0
Other - UC 0 114 114
U.S. Forestry 0
Other-Network UC n/a 993 993
_______ ______ _____
2,253 4,737 6,990
Number of FIND commands by database
CC database 6,876
CCT database 114
Total number of FIND commands 6,990
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,998 13,129 17,127
Davis 7,469 152 7,621
Irvine 10,097 0 10,097
Los Angeles 7 5,099 5,106
Riverside 93 1,833 1,926
San Diego 614 3,655 4,269
San Francisco 3,243 0 3,243
Santa Barbara 30 3,686 3,716
Santa Cruz 430 1,650 2,080
LBL 0 4,704 4,704
LLL 0 1,402 1,402
Los Alamos n/a 0 0
Other - UC 0 2,268 2,268
U.S. Forestry 0
Other-Network UC n/a 5,923 5,923
_______ ______ _____
25,981 43,501 69,482
Number of Records Displayed by database:
CC database 64,415
CCT database 5,067
Total number of Records Displayed 69,482
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 96.1%
Percent of CCT sessions 3.9%
Percent of searches done in the CC database 98.4%
Percent of searches done in the CCT database 1.6%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 5.9
2.0 CC Database Statistics
___________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 270:44
Average number of searches completed per session 2.7
Retrievals per search - median 7.0
Retrievals per search - average 463.5
Retrievals per search - standard deviation 4395.3
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 0.5%
Percent of long searches completed
(includes partial results) 75.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,284 36.4%
DISPLAY (excluding automatic displays) 4,968 28.8%
HELP 149 0.9%
EXPLAIN 162 0.9%
SET/RESET 1,101 6.4%
SHOW 52 0.3%
ADD ON (AND, OR, AND NOT) 592 3.4%
LOGON or LOGOFF 2,996 17.4%
COMMENT 0 0.0%
SAVE 211 1.2%
USE 3 0.0%
OTHER 733 4.2%
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 3,020 43.8% 490 16.2% 28 226.6 1264.9
TITLE WORD 2,289 33.2% 713 31.1% 12 739.6 3986.7
EXACT TITLE 134 1.9% 54 40.3% 6 201.4 752.4
JOURNAL 297 4.3% 104 35.0% 448 5205.9 21666.1
EXACT JOURNAL 122 1.8% 53 43.4% 395 3063.8 6884.7
SUBJECT CAT 21 0.3% 3 14.3% 17 19.4 16.7
SUBFILE 20 0.3% 0 0.0% 67 204.4 451.5
PUBLICATION TYPE 11 0.2% 4 36.4% 5 7.3 11.1
LANGUAGE 1 0.0% 0 0.0% 8,639 8639.0 0.0
DATE 170 2.5% 30 17.6% 13 151.6 546.3
ADDED 24 0.3% 3 12.5% 4 6.7 7.5
PERIODICAL 416 6.0% 53 12.7% 4 24.5 68.1
EXACT PE 73 1.1% 6 8.2% 3 28.2 154.7
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 304 4.4% 111 36.5% 18 812.4 4573.3
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 620 9.9% 194 31.3% 6 89.9 536.9
Single 5,626 90.1% 1,228 21.8% 26 703.9 5462.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 76.2%
LONG 4.4%
FIELDS 1.1%
PERIODICALS 11.9%
COMMENTS 0.0%
Other 1.4%
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) 28:56
Average number of searches completed per session 1.1
Retrievals per search - median 32.0
Retrievals per search - average 311.8
Retrievals per search - standard deviation 1177.8
Percent of searches completed with 0 results 40.3%
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 114 21.2%
DISPLAY (excluding automatic displays) 160 29.7%
HELP 44 8.2%
EXPLAIN 17 3.2%
SET/RESET 70 13.0%
SHOW 12 2.2%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 96 17.8%
COMMENT 0 0.0%
SAVE 2 0.4%
USE 0 0.0%
OTHER 23 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:
JOURNAL 96 84.2% 40 41.7% 143 593.1 1635.2
EXACT JOURNAL 10 8.8% 2 20.0% 134 276.8 256.2
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 8 7.0% 4 50.0% 10 30.3 47.1
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 114 100% 46 40.3% 129 522.8 1492.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
ISSUES 56.8%
SHORT 13.1%
LONG 20.5%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 4.5%
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 29.5%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 11.1%
4. Index invalid in current database 3.7%
5. DISPLAY command contains invalid word 3.0%
6. Max. # of ports to a Z39 db are in use 2.6%
7. Search term missing from search command 1.9%
8. PS command - no previous screen 1.8%
9. Valid command at an inappropriate time 1.8%
10. D ABS command in database w/o abstracts 1.5%
11. All others 16.1%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 19.6%
2. FIND (CC DB) 11.7%
3. LOCATE (ARTICLE DBS) 11.2%
4. CC INDEXES 6.1%
5. DATABASES 4.5%
6. MAIL 3.4%
7. Unrecognized term 3.4%
8. DISPLAY 3.4%
9. COMMANDS 3.4%
10. CC DATABASE 3.4%
11. All others 30.2%
Ten most frequent HELP situations:
1. Help requested from START CC command 14.0%
2. First word of command is invalid 12.9%
3. FIND command with invalid index name 11.0%
4. Help requested from SET DB command 6.7%
5. DISPLAY command - middle of >1 screen 6.2%
6. DISPLAY command-first of >1 screen 5.9%
7. FIND command retrieves >1 book 4.8%
8. F/BR with index invalid in current DB 4.8%
9. FIND command with zero results 3.5%
10. NS command - no next screen 3.0%
11. All others 27.2%
Ten most frequent SHOW requests:
1. HISTORY 63.5%
2. SYSTEM NEWS 9.5%
3. MAIL STATUS 4.8%
4. LIBRARY NEWS 3.2%
5. CC SETTINGS 3.2%
6. SEARCH 3.2%
7. LOCAL INFORMATION 1.6%
8. CCT SETTINGS 1.6%
9. 5101 1.6%
10. CC GLOSSARY 1.6%
11. All others 6.3%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)