MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 07/14/01 through 07/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 68 211 279
Davis 193 9 202
Irvine 33 0 33
Los Angeles 0 35 35
Riverside 11 52 63
San Diego 4 58 62
San Francisco 37 0 37
Santa Barbara 0 31 31
Santa Cruz 1 20 21
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 25 25
Other-Network UC n/a 436 436
_______ ______ _____
347 894 1,241
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,092 3,215 26,269
BIO88 149 312 2,031
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 40 270
2-4 a.m. 7 13 36
4-6 a.m. 16 53 373
6-8 a.m. 57 137 1,063
8-10 a.m. 123 293 2,353
10-12 a.m. 271 812 5,744
12-2 p.m. 214 641 4,741
2-4 p.m. 215 538 4,869
4-6 p.m. 182 484 4,266
6-8 p.m. 72 239 2,118
8-10 p.m. 38 167 1,335
10-12 p.m. 29 110 1,132
__________ __________ __________ _________________
Total: 1,241 3,527 28,300
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 200 650 850
Davis 721 16 737
Irvine 97 0 97
Los Angeles 0 114 114
Riverside 30 93 123
San Diego 31 144 175
San Francisco 126 0 126
Santa Barbara 0 103 103
Santa Cruz 12 72 84
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 40 40
Los Alamos 0 0 0
Other - UC 0 40 40
Other-Network UC n/a 1,027 1,027
_______ ______ _____
1,217 2,310 3,527
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,416 6,483 7,899
Davis 7,543 25 7,568
Irvine 944 0 944
Los Angeles 0 713 713
Riverside 408 1,290 1,698
San Diego 252 1,205 1,457
San Francisco 467 0 467
Santa Barbara 0 1,500 1,500
Santa Cruz 22 457 479
Lawrence Berkeley 0 97 97
Lawrence Livermore 0 391 391
Los Alamos 0 0 0
Other - UC 0 447 447
Other-Network UC n/a 4,640 4,640
_______ ______ _____
11,052 17,248 28,300
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.3
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) 11:04
Average session length (minutes:seconds) 15:00
Longest session recorded (minutes:seconds) 355:33
Average number of searches completed per session 2.8
Retrievals per search - median 8.0
Retrievals per search - average 461.0
Retrievals per search - standard deviation 4295.5
Percent of searches completed with 0 results 25.4%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 67.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,116 32.3%
DISPLAY (excluding automatic displays) 3,410 35.3%
BROWSE 4 0.0%
HELP 116 1.2%
EXPLAIN 113 1.2%
SET/RESET 668 6.9%
SHOW 27 0.3%
ADD ON (AND, OR, AND NOT) 411 4.3%
LOGON or LOGOFF 1,232 12.8%
COMMENT 0 0.0%
SAVE 236 2.4%
USE 2 0.0%
OTHER 327 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 1,258 35.8% 249 19.8% 24 123.6 435.5
TITLE WORD 598 17.0% 265 44.3% 9 562.7 3258.8
EXACT TITLE 13 0.4% 9 69.2% 5 30.0 52.8
KEYWORD 1,150 32.7% 241 21.0% 24 768.4 3631.4
JOURNAL 149 4.2% 61 40.9% 142 4670.0 21602.4
EXACT JOURNAL 71 2.0% 21 29.6% 264 1181.4 2693.3
SOURCE 8 0.2% 5 62.5% 728 817.0 553.9
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 0 0.0% 0 0.0% 0 0.0 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 2 0.1% 0 0.0% 31 30.5 17.7
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 16 0.5% 9 56.3% 10 165.4 244.0
LANGUAGE 3 0.1% 0 0.0% 4,235 2880.3 2346.4
ADDED 2 0.1% 1 50.0% 25 25.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 14 0.4% 4 28.6% 24 278.4 802.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 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 2.8% 15 15.2% 3 81.6 592.9
EXACT PE 18 0.5% 0 0.0% 4 6.3 8.2
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 117 3.3% 40 34.2% 9 629.4 4130.2
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 402 13.0% 142 35.3% 6 144.6 844.1
Single 2,688 87.0% 621 23.1% 28 714.1 5355.7
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 4 100% 0 0.0% 8 9.8 8.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 84.4%
LONG 2.9%
TAGS 0.0%
FIELDS 2.2%
BROWSE REVIEW 0.1%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.9%
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 36.4%
2. First word of command is invalid 30.5%
3. FIND command with invalid index name 10.9%
4. DISPLAY command contains invalid word 2.9%
5. Search term missing from search command 2.4%
6. PS command - no previous screen 2.1%
7. DATE search with unrecognized word 1.9%
8. DISPLAY command - no FIND results 1.2%
9. Index invalid in current database 1.0%
10. Max. # of ports to a Z39 db are in use 1.0%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 21.2%
2. GUIDE 16.8%
3. COMMANDS 8.0%
4. FIND 8.0%
5. BIOSIS DATABASE 7.1%
6. Unrecognized term 4.4%
7. DATABASES 4.4%
8. INDEXES 3.5%
9. B321 2.7%
10. BIOSIS NEWS 2.7%
11. All others 21.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.2%
2. First word of command is invalid 17.0%
3. DISPLAY command-first of >1 screen 12.7%
4. FIND command with invalid index name 7.4%
5. DISPLAY command-complete in one screen 6.6%
6. 3 HELP commands issued from same code 4.4%
7. DISPLAY command - last of >1 screen 3.9%
8. FIND command with zero results 3.5%
9. FIND command retrieves >1 book 3.1%
10. DISPLAY command - middle of >1 screen 2.6%
11. All others 12.7%
Ten most frequent SHOW requests:
1. HISTORY 70.4%
2. SEARCH 11.1%
3. PUBLICATION TYPES 3.7%
4. BIOSIS NEWS 3.7%
5. SYSTEM NEWS 3.7%
6. SYSTEM5 NEWS 3.7%
7. DATABASES 3.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)