MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 09/01/01 through 09/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 59 544 603
Davis 261 6 267
Irvine 111 0 111
Los Angeles 0 161 161
Riverside 18 55 73
San Diego 19 180 199
San Francisco 140 0 140
Santa Barbara 1 138 139
Santa Cruz 12 44 56
LBL 0 71 71
LLL 0 38 38
Los Alamos n/a 0 0
Other - UC 0 21 21
U.S. Forestry 0
Other-Network UC n/a 518 518
_______ ______ _____
621 1,776 2,397
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 49 508 3,384
2-4 a.m. 31 121 1,023
4-6 a.m. 33 113 819
6-8 a.m. 95 551 3,950
8-10 a.m. 277 929 6,979
10-12 a.m. 464 1,085 12,840
12-2 p.m. 424 1,038 8,715
2-4 p.m. 433 1,101 10,563
4-6 p.m. 304 654 5,494
6-8 p.m. 122 330 3,038
8-10 p.m. 88 324 3,322
10-12 p.m. 77 334 3,335
__________ __________ __________ _________________
Total: 2,397 7,088 63,462
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 137 1,443 1,580
Davis 687 11 698
Irvine 354 0 354
Los Angeles 0 386 386
Riverside 35 150 185
San Diego 85 573 658
San Francisco 444 0 444
Santa Barbara 3 443 446
Santa Cruz 26 110 136
LBL 0 139 139
LLL 0 633 633
Los Alamos n/a 0 0
Other - UC 3 64 67
U.S. Forestry 0
Other-Network UC n/a 1,362 1,362
_______ ______ _____
1,774 5,314 7,088
Number of FIND commands by database
CC database 7,022
CCT database 66
Total number of FIND commands 7,088
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,300 15,560 16,860
Davis 6,301 40 6,341
Irvine 3,172 0 3,172
Los Angeles 0 3,535 3,535
Riverside 368 1,532 1,900
San Diego 331 4,042 4,373
San Francisco 3,200 0 3,200
Santa Barbara 182 6,187 6,369
Santa Cruz 310 1,874 2,184
LBL 0 1,517 1,517
LLL 0 4,366 4,366
Los Alamos n/a 0 0
Other - UC 2 291 293
U.S. Forestry 0
Other-Network UC n/a 9,352 9,352
_______ ______ _____
15,166 48,296 63,462
Number of Records Displayed by database:
CC database 61,185
CCT database 2,277
Total number of Records Displayed 63,462
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 96.5%
Percent of CCT sessions 3.5%
Percent of searches done in the CC database 99.1%
Percent of searches done in the CCT database 0.9%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.3
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) 193:25
Average number of searches completed per session 3.0
Retrievals per search - median 7.0
Retrievals per search - average 355.2
Retrievals per search - standard deviation 3189.9
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 64.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,469 38.7%
DISPLAY (excluding automatic displays) 4,764 28.5%
HELP 105 0.6%
EXPLAIN 101 0.6%
SET/RESET 1,017 6.1%
SHOW 16 0.1%
ADD ON (AND, OR, AND NOT) 553 3.3%
LOGON or LOGOFF 2,761 16.5%
COMMENT 0 0.0%
SAVE 178 1.1%
USE 5 0.0%
OTHER 749 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 2,977 38.5% 497 16.7% 27 217.3 1183.2
TITLE WORD 1,940 25.1% 589 30.4% 14 741.2 4987.5
EXACT TITLE 82 1.1% 41 50.0% 5 55.7 185.1
JOURNAL 395 5.1% 177 44.8% 25 2436.4 9090.4
EXACT JOURNAL 470 6.1% 339 72.1% 40 737.5 1778.9
SUBJECT CAT 70 0.9% 11 15.7% 6 9.1 7.7
SUBFILE 22 0.3% 0 0.0% 52 320.3 1203.9
PUBLICATION TYPE 28 0.4% 9 32.1% 8 68.4 106.8
LANGUAGE 6 0.1% 0 0.0% 27 205.2 427.4
DATE 161 2.1% 30 18.6% 10 200.2 675.0
ADDED 586 7.6% 441 75.3% 19 31.2 47.6
PERIODICAL 412 5.3% 59 14.3% 4 99.4 1034.6
EXACT PE 112 1.4% 12 10.7% 4 78.0 424.7
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 466 6.0% 139 29.8% 13 735.3 6496.9
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 1,248 19.4% 623 49.9% 9 72.2 393.7
Single 5,198 80.6% 1,092 21.0% 25 585.5 4142.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.6%
SHORT 75.8%
LONG 5.2%
FIELDS 0.8%
PERIODICALS 11.4%
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) 84:12
Average number of searches completed per session 0.8
Retrievals per search - median 58.0
Retrievals per search - average 1003.2
Retrievals per search - standard deviation 4670.1
Percent of searches completed with 0 results 33.3%
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 66 18.5%
DISPLAY (excluding automatic displays) 91 25.5%
HELP 31 8.7%
EXPLAIN 10 2.8%
SET/RESET 59 16.5%
SHOW 7 2.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 66 18.5%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 27 7.6%
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 46 69.7% 18 39.1% 146 2271.5 7041.4
EXACT JOURNAL 18 27.3% 4 22.2% 91 165.6 191.2
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 2 3.0% 0 0.0% 145 144.5 111.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 66 100% 22 33.3% 142 1504.7 5674.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.2%
ISSUES 51.5%
SHORT 23.7%
LONG 14.4%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.0%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 34.4%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 10.6%
4. Index invalid in current database 4.4%
5. Max. # of ports to a Z39 db are in use 2.2%
6. D ABS command in database w/o abstracts 2.1%
7. Search term missing from search command 1.9%
8. PS command - no previous screen 1.8%
9. DISPLAY command contains invalid word 1.4%
10. Valid command at an inappropriate time 1.1%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 21.6%
2. LOCATE (ARTICLE DBS) 15.3%
3. CC INDEXES 11.7%
4. FIND (CC DB) 6.3%
5. CC DATABASE 6.3%
6. DATABASES 5.4%
7. COMMANDS 5.4%
8. SUBJECT CATEGORY 4.5%
9. Unrecognized term 3.6%
10. FIND (CCT DB) 3.6%
11. All others 16.2%
Ten most frequent HELP situations:
1. Help requested from START CC command 19.4%
2. First word of command is invalid 12.1%
3. F/BR with index invalid in current DB 10.1%
4. FIND command with invalid index name 8.9%
5. Help requested from SET DB command 8.5%
6. DISPLAY command - middle of >1 screen 5.3%
7. FIND command retrieves >1 book 4.9%
8. DISPLAY command-first of >1 screen 4.9%
9. FIND command with zero results 4.5%
10. DISPLAY command - last of >1 screen 3.2%
11. All others 18.2%
Ten most frequent SHOW requests:
1. HISTORY 52.2%
2. SYSTEM NEWS 13.0%
3. SEARCH 8.7%
4. LIBRARY NEWS 4.3%
5. MAIL SETTINGS 4.3%
6. CCT SETTINGS 4.3%
7. CC NEWS 4.3%
8. SC LIST (CC DBS) 4.3%
9. MAIL STATUS 4.3%
11. All others 0.0%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)