MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 07/21/01 through 07/27/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 46 568 614
Davis 242 10 252
Irvine 148 0 148
Los Angeles 2 204 206
Riverside 29 64 93
San Diego 22 209 231
San Francisco 151 0 151
Santa Barbara 1 103 104
Santa Cruz 21 106 127
LBL 0 83 83
LLL 0 67 67
Los Alamos n/a 0 0
Other - UC 3 25 28
U.S. Forestry 0
Other-Network UC n/a 520 520
_______ ______ _____
665 1,959 2,624
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 52 418 2,090
2-4 a.m. 41 139 1,016
4-6 a.m. 38 98 914
6-8 a.m. 91 511 5,563
8-10 a.m. 291 1,096 7,405
10-12 a.m. 537 1,435 11,649
12-2 p.m. 435 1,176 8,478
2-4 p.m. 526 1,569 15,015
4-6 p.m. 341 848 22,585
6-8 p.m. 130 392 3,546
8-10 p.m. 60 207 2,476
10-12 p.m. 82 348 2,444
__________ __________ __________ _________________
Total: 2,624 8,237 83,181
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 118 1,615 1,733
Davis 1,000 23 1,023
Irvine 493 0 493
Los Angeles 14 540 554
Riverside 59 158 217
San Diego 63 506 569
San Francisco 398 0 398
Santa Barbara 2 507 509
Santa Cruz 34 283 317
LBL 0 219 219
LLL 0 744 744
Los Alamos n/a 0 0
Other - UC 2 152 154
U.S. Forestry 0
Other-Network UC n/a 1,307 1,307
_______ ______ _____
2,183 6,054 8,237
Number of FIND commands by database
CC database 8,123
CCT database 114
Total number of FIND commands 8,237
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 978 16,960 17,938
Davis 6,975 97 7,072
Irvine 2,759 0 2,759
Los Angeles 56 5,127 5,183
Riverside 574 1,664 2,238
San Diego 275 3,815 4,090
San Francisco 16,473 0 16,473
Santa Barbara 6 6,775 6,781
Santa Cruz 558 2,735 3,293
LBL 0 2,044 2,044
LLL 0 6,559 6,559
Los Alamos n/a 0 0
Other - UC 435 886 1,321
U.S. Forestry 0
Other-Network UC n/a 7,430 7,430
_______ ______ _____
29,089 54,092 83,181
Number of Records Displayed by database:
CC database 80,149
CCT database 3,032
Total number of Records Displayed 83,181
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 96.4%
Percent of CCT sessions 3.6%
Percent of searches done in the CC database 98.6%
Percent of searches done in the CCT database 1.4%
1.5 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 4.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 4.0
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) 553:24
Average number of searches completed per session 3.2
Retrievals per search - median 8.0
Retrievals per search - average 648.1
Retrievals per search - standard deviation 4765.6
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 71.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7,377 37.9%
DISPLAY (excluding automatic displays) 5,772 29.7%
HELP 90 0.5%
EXPLAIN 132 0.7%
SET/RESET 1,114 5.7%
SHOW 27 0.1%
ADD ON (AND, OR, AND NOT) 746 3.8%
LOGON or LOGOFF 3,018 15.5%
COMMENT 0 0.0%
SAVE 358 1.8%
USE 2 0.0%
OTHER 825 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 3,494 40.5% 575 16.5% 30 286.8 1950.6
TITLE WORD 2,345 27.2% 754 32.2% 15 1171.0 7051.5
EXACT TITLE 110 1.3% 53 48.2% 1 239.2 1061.8
JOURNAL 512 5.9% 184 35.9% 792 4356.2 11875.1
EXACT JOURNAL 516 6.0% 331 64.1% 61 4003.8 11020.8
SUBJECT CAT 42 0.5% 4 9.5% 9 52.1 171.6
SUBFILE 15 0.2% 0 0.0% 22 410.9 1465.3
PUBLICATION TYPE 35 0.4% 5 14.3% 14 272.7 773.7
LANGUAGE 45 0.5% 2 4.4% 7 228.3 766.8
DATE 181 2.1% 23 12.7% 10 106.7 350.0
ADDED 588 6.8% 438 74.5% 24 36.4 45.1
PERIODICAL 347 4.0% 60 17.3% 4 52.7 246.8
EXACT PE 68 0.8% 3 4.4% 4 23.0 69.4
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 334 3.9% 132 39.5% 13 1384.0 8987.2
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 1,218 16.6% 607 49.8% 9 73.3 362.1
Single 6,136 83.4% 1,343 21.9% 32 1070.6 6152.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.2%
SHORT 75.6%
LONG 8.8%
FIELDS 1.3%
PERIODICALS 8.0%
COMMENTS 0.0%
Other 1.2%
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) 24:23
Average number of searches completed per session 1.2
Retrievals per search - median 61.0
Retrievals per search - average 223.4
Retrievals per search - standard deviation 974.3
Percent of searches completed with 0 results 31.6%
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 24.6%
DISPLAY (excluding automatic displays) 138 29.8%
HELP 22 4.8%
EXPLAIN 20 4.3%
SET/RESET 64 13.8%
SHOW 4 0.9%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 81 17.5%
COMMENT 0 0.0%
SAVE 0 0.0%
USE 0 0.0%
OTHER 20 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 58 50.9% 22 37.9% 109 184.8 267.6
EXACT JOURNAL 45 39.5% 11 24.4% 145 247.6 320.5
SUBJECT CAT 1 0.9% 0 0.0% 10,185 10185.0 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 8.8% 3 30.0% 14 30.0 42.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 114 100% 36 31.6% 113 326.5 1165.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.8%
ISSUES 60.0%
SHORT 15.2%
LONG 9.7%
PERIODICALS 9.7%
COMMENTS 0.0%
Other 0.7%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
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Percent of commands that contained errors 6.7%
Ten most frequent errors:
1. NS command - no next screen 35.0%
2. First word of command is invalid 27.4%
3. FIND command with invalid index name 8.9%
4. Index invalid in current database 3.4%
5. Max. # of ports to a Z39 db are in use 3.4%
6. DISPLAY command contains invalid word 2.6%
7. D ABS command in database w/o abstracts 1.9%
8. Search term missing from search command 1.6%
9. Valid command at an inappropriate time 1.4%
10. PS command - no previous screen 1.2%
11. All others 13.3%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 18.4%
2. FIND (CC DB) 9.9%
3. CC INDEXES 9.2%
4. MAIL 5.3%
5. LOCATE (ARTICLE DBS) 5.3%
6. CC DATABASE 5.3%
7. Unrecognized term 3.9%
8. DATABASES 3.9%
9. CCT INDEXES 3.9%
10. COMMANDS 3.3%
11. All others 31.6%
Ten most frequent HELP situations:
1. Help requested from START CC command 22.3%
2. First word of command is invalid 12.1%
3. DISPLAY command - middle of >1 screen 9.5%
4. FIND command with zero results 7.2%
5. FIND command with invalid index name 6.4%
6. DISPLAY command-first of >1 screen 4.9%
7. Help requested from SET DB command 4.9%
8. F/BR with index invalid in current DB 4.5%
9. DISPLAY command-complete in one screen 3.0%
10. NS command - no next screen 2.3%
11. All others 22.7%
Ten most frequent SHOW requests:
1. HISTORY 56.7%
2. SEARCH 10.0%
3. CC GLOSSARY 6.7%
4. SYSTEM NEWS 3.3%
5. STATISTICS 3.3%
6. CC SETTINGS 3.3%
7. CCT SETTINGS 3.3%
8. SC LIST (CC DBS) 3.3%
9. CC STATISTICS 3.3%
10. MAIL STATUS 3.3%
11. All others 3.3%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)