MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,245 3,802 5,047
Davis 1,929 180 2,109
Irvine 1,797 0 1,797
Los Angeles 487 1,405 1,892
Riverside 413 505 918
San Diego 294 1,242 1,536
San Francisco 1,165 0 1,165
Santa Barbara 274 885 1,159
Santa Cruz 416 510 926
LBL 0 584 584
LLL 0 306 306
Los Alamos n/a 1 1
Other - UC 15 239 254
U.S. Forestry 0
Other-Network UC n/a 2,135 2,135
_______ ______ _____
8,035 11,794 19,829
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 304 993 9,096
2-4 a.m. 205 905 33,286
4-6 a.m. 226 703 7,071
6-8 a.m. 427 2,203 22,244
8-10 a.m. 1,907 6,091 56,327
10-12 a.m. 3,341 9,262 89,470
12-2 p.m. 3,476 9,742 93,952
2-4 p.m. 4,306 11,846 112,803
4-6 p.m. 2,783 8,120 78,316
6-8 p.m. 1,292 4,147 34,868
8-10 p.m. 878 2,728 29,317
10-12 p.m. 684 2,227 20,034
__________ __________ __________ _________________
Total: 19,829 58,967 586,784
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,260 11,104 14,364
Davis 5,708 667 6,375
Irvine 5,276 0 5,276
Los Angeles 1,306 4,440 5,746
Riverside 1,137 1,568 2,705
San Diego 893 3,218 4,111
San Francisco 3,385 0 3,385
Santa Barbara 830 2,917 3,747
Santa Cruz 1,058 1,615 2,673
LBL 0 1,897 1,897
LLL 0 2,791 2,791
Los Alamos n/a 1 1
Other - UC 33 521 554
U.S. Forestry 0
Other-Network UC n/a 5,342 5,342
_______ ______ _____
22,886 36,081 58,967
Number of FIND commands by database
CC database 57,780
CCT database 1,187
Total number of FIND commands 58,967
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 38,216 112,972 151,188
Davis 47,240 3,523 50,763
Irvine 73,618 0 73,618
Los Angeles 11,952 38,912 50,864
Riverside 6,814 18,603 25,417
San Diego 6,724 24,278 31,002
San Francisco 37,093 0 37,093
Santa Barbara 6,176 30,597 36,773
Santa Cruz 7,532 15,415 22,947
LBL 0 27,309 27,309
LLL 0 28,049 28,049
Los Alamos n/a 1 1
Other - UC 565 4,734 5,299
U.S. Forestry 0
Other-Network UC n/a 46,461 46,461
_______ ______ _____
235,930 350,854 586,784
Number of Records Displayed by database:
CC database 543,654
CCT database 43,130
Total number of Records Displayed 586,784
1.4 Relative Use of Databases
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Relative use of CC vs. CCT databases:
Percent of CC sessions 95.4%
Percent of CCT sessions 4.6%
Percent of searches done in the CC database 98.0%
Percent of searches done in the CCT database 2.0%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 6.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 6.3
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) 795:25
Average number of searches completed per session 3.0
Retrievals per search - median 11.0
Retrievals per search - average 549.2
Retrievals per search - standard deviation 5619.6
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 47.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 53,472 36.6%
DISPLAY (excluding automatic displays) 40,755 27.9%
HELP 2,193 1.5%
EXPLAIN 2,111 1.4%
SET/RESET 6,393 4.4%
SHOW 299 0.2%
ADD ON (AND, OR, AND NOT) 4,308 2.9%
LOGON or LOGOFF 25,644 17.5%
COMMENT 3 0.0%
SAVE 3,998 2.7%
USE 61 0.0%
OTHER 6,896 4.7%
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 24,902 42.1% 3,616 14.5% 33 221.0 1295.0
TITLE WORD 19,214 32.5% 5,466 28.4% 17 1030.2 9251.1
EXACT TITLE 403 0.7% 221 54.8% 3 564.6 2783.0
JOURNAL 3,022 5.1% 1,196 39.6% 461 4013.4 14185.5
EXACT JOURNAL 2,202 3.7% 1,218 55.3% 58 2036.1 6655.5
SUBJECT CAT 206 0.3% 30 14.6% 31 876.3 10558.5
SUBFILE 152 0.3% 17 11.2% 25 511.6 2179.5
PUBLICATION TYPE 272 0.5% 51 18.8% 12 43.4 70.7
LANGUAGE 41 0.1% 6 14.6% 63 1656.0 3295.8
DATE 891 1.5% 159 17.8% 13 161.2 729.2
ADDED 1,628 2.8% 1,083 66.5% 23 36.2 39.1
PERIODICAL 1,689 2.9% 296 17.5% 6 136.7 1113.0
EXACT PE 470 0.8% 62 13.2% 3 27.6 147.2
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 4,026 6.8% 1,239 30.8% 21 877.8 6377.5
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 5,754 10.8% 2,328 40.5% 9 94.4 648.9
Single 47,473 89.2% 9,957 21.0% 33 818.7 6895.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 82.3%
LONG 4.2%
FIELDS 1.4%
PERIODICALS 6.0%
COMMENTS 0.0%
Other 2.4%
2.1 CCT Database Statistics
____________________________
Median session length (minutes:seconds) 0:00
Average session length (minutes:seconds) 0:00
Longest session recorded (minutes:seconds) 473:38
Average number of searches completed per session 1.3
Retrievals per search - median 43.0
Retrievals per search - average 386.9
Retrievals per search - standard deviation 1585.0
Percent of searches completed with 0 results 32.2%
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 1,180 20.5%
DISPLAY (excluding automatic displays) 1,818 31.6%
HELP 649 11.3%
EXPLAIN 266 4.6%
SET/RESET 626 10.9%
SHOW 93 1.6%
ADD ON (AND, OR, AND NOT) 7 0.1%
LOGON or LOGOFF 867 15.1%
COMMENT 0 0.0%
SAVE 4 0.1%
USE 3 0.1%
OTHER 236 4.1%
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 854 71.8% 315 36.9% 114 480.5 1734.5
EXACT JOURNAL 258 21.7% 57 22.1% 99 220.5 349.2
SUBJECT CAT 21 1.8% 0 0.0% 6,932 6903.6 4153.5
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 11 0.9% 0 0.0% 21 780.9 1622.1
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 45 3.8% 8 17.8% 7 28.5 46.0
By number of indexes:
Multiple 9 0.8% 0 0.0% 5 52.4 73.1
Single 1,171 99.2% 380 32.4% 110 577.8 1913.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.3%
ISSUES 46.5%
SHORT 18.8%
LONG 24.1%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 1.3%
2.3 Error, EXPLAIN and HELP statistics (CC & CCT)
__________________________________________________
Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. First word of command is invalid 29.9%
2. NS command - no next screen 28.5%
3. FIND command with invalid index name 11.0%
4. Index invalid in current database 5.9%
5. PS command - no previous screen 2.1%
6. Search term missing from search command 2.1%
7. DISPLAY command contains invalid word 2.0%
8. Valid command at an inappropriate time 1.7%
9. F SUB CAT search with invalid SC 1.6%
10. D ABS command in database w/o abstracts 1.6%
11. All others 13.6%
Ten most frequent EXPLAIN requests:
1. CC GUIDE 17.2%
2. FIND (CC DB) 14.0%
3. CC INDEXES 10.5%
4. LOCATE (ARTICLE DBS) 8.1%
5. COMMANDS 7.2%
6. Unrecognized term 3.8%
7. DATABASES 3.1%
8. CC DATABASE 3.0%
9. CCT INDEXES 2.5%
10. DISPLAY 2.1%
11. All others 28.5%
Ten most frequent HELP situations:
1. Help requested from START CC command 15.7%
2. First word of command is invalid 13.8%
3. F/BR with index invalid in current DB 10.4%
4. FIND command with invalid index name 8.6%
5. Help requested from SET DB command 6.8%
6. DISPLAY command-first of >1 screen 5.0%
7. FIND command with zero results 5.0%
8. DISPLAY command - middle of >1 screen 4.1%
9. FIND command retrieves >1 book 3.1%
10. DISPLAY command-complete in one screen 3.1%
11. All others 24.4%
Ten most frequent SHOW requests:
1. HISTORY 30.7%
2. SEARCH 15.6%
3. MAIL STATUS 11.3%
4. SYSTEM NEWS 8.2%
5. CC NEWS 5.4%
6. SC LIST (CC DBS) 5.4%
7. CC GLOSSARY 4.3%
8. CC SETTINGS 3.6%
9. LIBRARY NEWS 2.6%
10. MAIL SETTINGS 2.6%
11. All others 10.5%
Cmm/yy cc MELVYL CURRENT CONTENTS DATABASE TELNET STATISTICS (monthly)