MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/03/01 through 11/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 49 284 333
Davis 195 6 201
Irvine 16 0 16
Los Angeles 0 54 54
Riverside 6 49 55
San Diego 12 77 89
San Francisco 27 0 27
Santa Barbara 0 15 15
Santa Cruz 3 11 14
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 0 17 17
Other-Network UC n/a 348 348
_______ ______ _____
308 882 1,190
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,077 3,290 27,854
BIO88 113 246 2,036
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 125 1,595
2-4 a.m. 8 15 108
4-6 a.m. 7 15 116
6-8 a.m. 26 73 625
8-10 a.m. 129 350 2,724
10-12 a.m. 239 638 4,383
12-2 p.m. 232 633 5,297
2-4 p.m. 255 743 5,905
4-6 p.m. 163 486 4,336
6-8 p.m. 76 210 2,527
8-10 p.m. 22 104 1,004
10-12 p.m. 24 144 1,270
__________ __________ __________ _________________
Total: 1,190 3,536 29,890
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 108 998 1,106
Davis 650 23 673
Irvine 67 0 67
Los Angeles 0 173 173
Riverside 11 120 131
San Diego 72 224 296
San Francisco 76 0 76
Santa Barbara 0 63 63
Santa Cruz 4 35 39
Lawrence Berkeley 0 19 19
Lawrence Livermore 0 53 53
Los Alamos 0 0 0
Other - UC 1 27 28
Other-Network UC n/a 812 812
_______ ______ _____
989 2,547 3,536
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,132 9,447 10,579
Davis 5,239 93 5,332
Irvine 326 0 326
Los Angeles 0 2,492 2,492
Riverside 32 1,023 1,055
San Diego 109 3,368 3,477
San Francisco 435 0 435
Santa Barbara 0 226 226
Santa Cruz 28 279 307
Lawrence Berkeley 0 80 80
Lawrence Livermore 0 274 274
Los Alamos 0 0 0
Other - UC 0 297 297
Other-Network UC n/a 5,010 5,010
_______ ______ _____
7,301 22,589 29,890
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 3.5
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) 10:09
Average session length (minutes:seconds) 13:25
Longest session recorded (minutes:seconds) 196:22
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 1210.0
Retrievals per search - standard deviation 12908
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 76.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,088 30.6%
DISPLAY (excluding automatic displays) 3,949 39.1%
BROWSE 0 0.0%
HELP 112 1.1%
EXPLAIN 117 1.2%
SET/RESET 586 5.8%
SHOW 22 0.2%
ADD ON (AND, OR, AND NOT) 448 4.4%
LOGON or LOGOFF 1,313 13.0%
COMMENT 0 0.0%
SAVE 199 2.0%
USE 1 0.0%
OTHER 265 2.6%
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 1,187 33.7% 243 20.5% 22 130.2 554.1
TITLE WORD 421 12.0% 179 42.5% 6 366.9 2254.5
EXACT TITLE 48 1.4% 29 60.4% 1 25.2 96.7
KEYWORD 1,386 39.4% 267 19.3% 29 1277.0 6903.9
JOURNAL 178 5.1% 64 36.0% 168 4264.0 11222.3
EXACT JOURNAL 55 1.6% 23 41.8% 1,465 3090.4 4026.3
SOURCE 1 0.0% 1 100% 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% 43 43.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 0 0.0% 34,330 22901.0 19795.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 20 0.6% 4 20.0% 23 91.4 156.3
LANGUAGE 0 0.0% 0 0.0% 0 0.0 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. 11 0.3% 4 36.4% 11 43.3 88.6
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 91 2.6% 16 17.6% 6 244.2 1826.2
EXACT PE 17 0.5% 1 5.9% 7 10.3 16.1
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 97 2.8% 22 22.7% 31 23371.3 79393.4
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 439 14.4% 117 26.6% 8 58.6 190.7
Single 2,614 85.6% 611 23.4% 33 2011.9 16957.3
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 2.1%
SHORT 88.8%
LONG 1.6%
TAGS 0.1%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 29.7%
3. FIND command with invalid index name 12.3%
4. PS command - no previous screen 5.2%
5. DISPLAY command contains invalid word 3.2%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 1.7%
8. DATE search with unrecognized word 1.6%
9. DISPLAY command-record numbers too large 1.2%
10. Index invalid in current database 0.9%
11. All others 8.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.5%
2. LOCATE (BIO DB) 20.5%
3. INDEXES 9.4%
4. FIND 6.8%
5. Unrecognized term 6.0%
6. ADDON SEARCH 6.0%
7. COMMANDS 4.3%
8. LOCATIONS 3.4%
9. BIOSIS DATABASE 2.6%
10. B342 2.6%
11. All others 17.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.4%
2. First word of command is invalid 14.0%
3. DISPLAY command-first of >1 screen 7.9%
4. FIND command with invalid index name 7.4%
5. FIND command retrieves >1 book 7.4%
6. DISPLAY command-complete in one screen 6.1%
7. DISPLAY command - last of >1 screen 5.2%
8. FIND command with zero results 3.9%
9. DISPLAY command - middle of >1 screen 3.5%
10. F/BR command with invalid search term 2.2%
11. All others 21.0%
Ten most frequent SHOW requests:
1. HISTORY 72.7%
2. BIOSIS NEWS 9.1%
3. SEARCH 9.1%
4. SETTINGS 4.5%
5. B937 4.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)