MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/04/02 through 05/10/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 90 176 266
Davis 179 3 182
Irvine 35 0 35
Los Angeles 1 68 69
Riverside 9 10 19
San Diego 21 62 83
San Francisco 34 0 34
Santa Barbara 1 33 34
Santa Cruz 4 43 47
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 35 35
Other-Network UC n/a 141 141
_______ ______ _____
374 573 947
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 891 2,893 28,701
BIO88 56 189 1,794
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 30 505
2-4 a.m. 12 22 290
4-6 a.m. 6 30 268
6-8 a.m. 23 64 578
8-10 a.m. 96 296 2,364
10-12 a.m. 145 596 4,424
12-2 p.m. 162 448 3,793
2-4 p.m. 199 656 8,627
4-6 p.m. 177 550 5,479
6-8 p.m. 77 230 2,380
8-10 p.m. 26 106 1,075
10-12 p.m. 12 54 712
__________ __________ __________ _________________
Total: 947 3,082 30,495
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 333 590 923
Davis 709 7 716
Irvine 130 0 130
Los Angeles 3 160 163
Riverside 10 42 52
San Diego 47 217 264
San Francisco 169 0 169
Santa Barbara 3 85 88
Santa Cruz 16 113 129
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 65 65
Other-Network UC n/a 377 377
_______ ______ _____
1,420 1,662 3,082
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,633 7,355 9,988
Davis 7,349 12 7,361
Irvine 1,351 0 1,351
Los Angeles 148 1,585 1,733
Riverside 73 263 336
San Diego 526 2,045 2,571
San Francisco 811 0 811
Santa Barbara 50 468 518
Santa Cruz 55 1,285 1,340
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 95 95
Los Alamos 0 0 0
Other - UC 0 984 984
Other-Network UC n/a 3,407 3,407
_______ ______ _____
12,996 17,499 30,495
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:46
Average session length (minutes:seconds) 12:51
Longest session recorded (minutes:seconds) 229:18
Average number of searches completed per session 3.2
Retrievals per search - median 14.0
Retrievals per search - average 1378.1
Retrievals per search - standard deviation 14372
Percent of searches completed with 0 results 19.5%
Percent of searches entered that are long 0.9%
Percent of long searches completed
(includes partial results) 70.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,551 27.6%
DISPLAY (excluding automatic displays) 3,343 36.2%
BROWSE 0 0.0%
HELP 159 1.7%
EXPLAIN 157 1.7%
SET/RESET 298 3.2%
SHOW 26 0.3%
ADD ON (AND, OR, AND NOT) 531 5.8%
LOGON or LOGOFF 1,417 15.4%
COMMENT 0 0.0%
SAVE 416 4.5%
USE 0 0.0%
OTHER 330 3.6%
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:
PERSONAL AUTHOR 773 27.7% 120 15.5% 26 219.3 809.7
TITLE WORD 337 12.1% 112 33.2% 18 601.3 1869.0
EXACT TITLE 45 1.6% 27 60.0% 1 3.9 6.1
KEYWORD 1,221 43.8% 191 15.6% 36 2787.5 22579.8
JOURNAL 146 5.2% 38 26.0% 1,045 8055.4 29925.6
EXACT JOURNAL 34 1.2% 17 50.0% 406 2190.7 4074.5
SOURCE 2 0.1% 0 0.0% 1 1.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 2 0.1% 0 0.0% 43 43.0 42.4
SUPERTAXA 1 0.0% 0 0.0% 25 25.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 2 0.1% 0 0.0% 41 41.0 45.3
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 8 0.3% 3 37.5% 7 11.2 7.7
LANGUAGE 1 0.0% 0 0.0% 10 10.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 6 0.2% 1 16.7% 22 65.6 103.8
ACCESSION NO. 4 0.1% 2 50.0% 1 1.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 80 2.9% 8 10.0% 6 103.9 351.9
EXACT PE 52 1.9% 14 26.9% 2 11.3 24.2
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 74 2.7% 9 12.2% 11 108.4 264.6
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 237 9.3% 57 24.0% 8 57.4 174.4
Single 2,303 90.7% 427 18.5% 37 2159.2 18306.9
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 86.3%
LONG 1.2%
TAGS 0.2%
FIELDS 2.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. First word of command is invalid 29.5%
2. NS command - no next screen 27.8%
3. FIND command with invalid index name 10.7%
4. PS command - no previous screen 4.9%
5. DISPLAY command contains invalid word 4.7%
6. Valid command at an inappropriate time 3.4%
7. DISPLAY command - no FIND results 3.0%
8. DATE search with unrecognized word 2.5%
9. Search term missing from search command 2.4%
10. 1281 1.0%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 28.0%
2. GUIDE 23.6%
3. FIND 12.7%
4. COMMANDS 10.2%
5. ADDON SEARCH 5.7%
6. INDEXES 3.2%
7. Unrecognized term 3.2%
8. BIOSIS DATABASE 2.5%
9. DATE 1.3%
10. BOOLEAN OPERATORS 0.6%
11. All others 8.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.7%
2. First word of command is invalid 14.9%
3. DISPLAY command-first of >1 screen 8.9%
4. FIND command with invalid index name 8.2%
5. FIND command with zero results 8.2%
6. FIND command retrieves >1 book 7.9%
7. DISPLAY command - middle of >1 screen 6.0%
8. DISPLAY command - last of >1 screen 3.8%
9. DISPLAY command-complete in one screen 3.5%
10. PS command - no previous screen 2.2%
11. All others 12.7%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. SEARCH 38.5%
3. UPDATE 11.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)