MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/16/02 through 03/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 87 294 381
Davis 185 0 185
Irvine 27 0 27
Los Angeles 0 60 60
Riverside 2 20 22
San Diego 32 36 68
San Francisco 40 0 40
Santa Barbara 0 5 5
Santa Cruz 1 18 19
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 47 47
Other-Network UC n/a 300 300
_______ ______ _____
374 790 1,164
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,059 3,443 28,517
BIO88 105 302 2,893
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 12 66
2-4 a.m. 15 38 389
4-6 a.m. 6 8 72
6-8 a.m. 25 95 598
8-10 a.m. 158 435 3,492
10-12 a.m. 250 713 5,239
12-2 p.m. 198 644 4,150
2-4 p.m. 224 814 6,178
4-6 p.m. 140 476 6,095
6-8 p.m. 82 266 2,581
8-10 p.m. 44 151 1,196
10-12 p.m. 20 93 1,354
__________ __________ __________ _________________
Total: 1,164 3,745 31,410
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 258 1,053 1,311
Davis 634 2 636
Irvine 71 0 71
Los Angeles 0 194 194
Riverside 2 70 72
San Diego 143 146 289
San Francisco 398 0 398
Santa Barbara 0 16 16
Santa Cruz 1 58 59
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 17 17
Los Alamos 0 0 0
Other - UC 0 85 85
Other-Network UC n/a 593 593
_______ ______ _____
1,507 2,238 3,745
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,202 9,650 11,852
Davis 6,609 4 6,613
Irvine 206 0 206
Los Angeles 0 2,180 2,180
Riverside 17 514 531
San Diego 900 1,166 2,066
San Francisco 2,289 0 2,289
Santa Barbara 0 310 310
Santa Cruz 4 2,211 2,215
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 78 78
Los Alamos 0 0 0
Other - UC 0 585 585
Other-Network UC n/a 2,478 2,478
_______ ______ _____
12,227 19,183 31,410
1.4 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 6.4
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) 7:26
Average session length (minutes:seconds) 12:57
Longest session recorded (minutes:seconds) 341:01
Average number of searches completed per session 3.2
Retrievals per search - median 8.0
Retrievals per search - average 1416.1
Retrievals per search - standard deviation 14381
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 73.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,176 29.8%
DISPLAY (excluding automatic displays) 3,943 37.0%
BROWSE 0 0.0%
HELP 199 1.9%
EXPLAIN 161 1.5%
SET/RESET 427 4.0%
SHOW 29 0.3%
ADD ON (AND, OR, AND NOT) 569 5.3%
LOGON or LOGOFF 1,563 14.7%
COMMENT 0 0.0%
SAVE 222 2.1%
USE 5 0.0%
OTHER 367 3.4%
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 931 26.8% 190 20.4% 29 260.7 1951.2
TITLE WORD 642 18.5% 249 38.8% 15 653.6 3071.4
EXACT TITLE 35 1.0% 23 65.7% 4 58.0 120.3
KEYWORD 1,324 38.2% 267 20.2% 33 3030.7 24752.8
JOURNAL 208 6.0% 93 44.7% 1,242 11364.1 28696.9
EXACT JOURNAL 67 1.9% 30 44.8% 3,024 5564.1 8780.4
SOURCE 0 0.0% 0 0.0% 0 0.0 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 1 0.0% 0 0.0% 224 224.0 0.0
SUPERTAXA 1 0.0% 0 0.0% 7 7.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 6 0.2% 1 16.7% 6 48.0 98.4
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 14 0.4% 2 14.3% 10 45.0 94.2
LANGUAGE 3 0.1% 0 0.0% 224 355.0 428.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 4 0.1% 0 0.0% 43 43.0 0.0
AUTHOR AFFIL. 7 0.2% 2 28.6% 11 16.8 16.8
ACCESSION NO. 6 0.2% 2 33.3% 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 99 2.9% 16 16.2% 4 13.8 46.3
EXACT PE 31 0.9% 3 9.7% 3 4.1 4.1
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 90 2.6% 31 34.4% 16 418.7 1741.0
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 285 9.0% 113 39.6% 6 94.9 524.9
Single 2,871 91.0% 674 23.5% 35 2349.6 18653.1
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 2.7%
SHORT 86.3%
LONG 1.8%
TAGS 0.4%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 28.1%
2. First word of command is invalid 26.5%
3. FIND command with invalid index name 11.8%
4. PS command - no previous screen 4.3%
5. DISPLAY command contains invalid word 3.5%
6. DATE search with unrecognized word 3.4%
7. DISPLAY command - no FIND results 3.2%
8. Search term missing from search command 2.5%
9. Valid command at an inappropriate time 2.2%
10. 125 1.3%
11. All others 13.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 28.0%
2. GUIDE 21.1%
3. FIND 15.5%
4. COMMANDS 12.4%
5. ADDON SEARCH 5.6%
6. Unrecognized term 4.3%
7. INDEXES 3.1%
8. BIOSIS DATABASE 1.2%
9. B336 1.2%
10. DATABASES 1.2%
11. All others 6.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.8%
2. FIND command with invalid index name 11.4%
3. DISPLAY command-first of >1 screen 10.6%
4. First word of command is invalid 10.0%
5. FIND command with zero results 10.0%
6. DISPLAY command - middle of >1 screen 5.3%
7. FIND command retrieves >1 book 4.2%
8. DISPLAY command - last of >1 screen 3.1%
9. DISPLAY command-complete in one screen 2.8%
10. PS command - no previous screen 2.2%
11. All others 12.8%
Ten most frequent SHOW requests:
1. HISTORY 86.4%
2. SEARCH 9.1%
3. SYSTEM NEWS 4.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)