MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 658 1,928 2,586
Davis 1,538 113 1,651
Irvine 261 0 261
Los Angeles 399 216 615
Riverside 289 216 505
San Diego 118 368 486
San Francisco 282 0 282
Santa Barbara 85 154 239
Santa Cruz 445 360 805
Lawrence Berkeley 0 26 26
Lawrence Livermore 0 49 49
Los Alamos 0 0 0
Other - UC 55 255 310
Other-Network UC n/a 2,223 2,223
_______ ______ _____
4,130 5,908 10,038
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 8,804 29,214 297,865
BIO88 1,234 2,617 17,684
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 104 391 13,459
2-4 a.m. 60 230 1,795
4-6 a.m. 86 254 4,384
6-8 a.m. 169 584 5,341
8-10 a.m. 1,000 2,700 28,178
10-12 a.m. 1,852 5,431 63,939
12-2 p.m. 1,942 6,048 58,248
2-4 p.m. 2,306 7,195 60,809
4-6 p.m. 1,395 4,803 39,193
6-8 p.m. 536 2,034 18,145
8-10 p.m. 332 1,146 11,183
10-12 p.m. 256 1,015 10,875
__________ __________ __________ _________________
Total: 10,038 31,831 315,549
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 3,208 6,447 9,655
Davis 5,406 417 5,823
Irvine 869 0 869
Los Angeles 985 609 1,594
Riverside 876 670 1,546
San Diego 374 1,027 1,401
San Francisco 1,003 0 1,003
Santa Barbara 405 609 1,014
Santa Cruz 1,775 1,124 2,899
Lawrence Berkeley 0 119 119
Lawrence Livermore 0 116 116
Los Alamos 0 0 0
Other - UC 68 755 823
Other-Network UC n/a 4,969 4,969
_______ ______ _____
14,969 16,862 31,831
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 28,015 61,666 89,681
Davis 72,180 3,675 75,855
Irvine 6,864 0 6,864
Los Angeles 8,441 6,829 15,270
Riverside 5,335 8,518 13,853
San Diego 2,209 10,609 12,818
San Francisco 4,967 0 4,967
Santa Barbara 2,818 6,389 9,207
Santa Cruz 12,277 13,095 25,372
Lawrence Berkeley 0 437 437
Lawrence Livermore 0 928 928
Los Alamos 0 0 0
Other - UC 236 5,869 6,105
Other-Network UC n/a 54,192 54,192
_______ ______ _____
143,342 172,207 315,549
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.4
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 0.3
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:03
Average session length (minutes:seconds) 13:28
Longest session recorded (minutes:seconds) 886:49
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 1140.2
Retrievals per search - standard deviation 14663
Percent of searches completed with 0 results 23.5%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 52.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 28,072 31.3%
DISPLAY (excluding automatic displays) 33,115 36.9%
BROWSE 0 0.0%
HELP 1,111 1.2%
EXPLAIN 1,353 1.5%
SET/RESET 4,636 5.2%
SHOW 307 0.3%
ADD ON (AND, OR, AND NOT) 3,759 4.2%
LOGON or LOGOFF 11,535 12.8%
COMMENT 1 0.0%
SAVE 2,612 2.9%
USE 35 0.0%
OTHER 3,249 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 9,947 32.4% 2,014 20.2% 21 119.3 384.5
TITLE WORD 4,746 15.5% 1,780 37.5% 10 657.6 5690.4
EXACT TITLE 217 0.7% 133 61.3% 1 137.3 657.8
KEYWORD 11,468 37.4% 2,215 19.3% 37 2450.7 24673.1
JOURNAL 1,308 4.3% 533 40.7% 630 5755.6 19662.6
EXACT JOURNAL 561 1.8% 213 38.0% 775 2777.9 5621.0
SOURCE 18 0.1% 16 88.9% 5 5.0 0.0
CONFERENCE 35 0.1% 20 57.1% 419 38319.3 143795
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 14 0.0% 2 14.3% 7 28.2 58.1
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 4 0.0% 0 0.0% 6 547.3 1082.5
PUBLICATION TYPE 7 0.0% 1 14.3% 19 21.5 9.2
DATE 142 0.5% 38 26.8% 10 47.2 85.3
LANGUAGE 38 0.1% 1 2.6% 81 628.6 1934.1
ADDED 8 0.0% 4 50.0% 11 12.3 6.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 81 0.3% 23 28.4% 25 434.5 1812.3
ACCESSION NO. 2 0.0% 1 50.0% 1 1.0 0.0
ISSN 2 0.0% 1 50.0% 423 423.0 0.0
ISBN 1 0.0% 0 0.0% 40 40.0 0.0
PERIODICAL 1,008 3.3% 253 25.1% 5 124.0 956.6
EXACT PE 172 0.6% 28 16.3% 3 28.5 145.5
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 916 3.0% 204 22.3% 17 2192.9 16572.0
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 2,729 9.8% 927 34.0% 7 97.1 632.3
Single 25,085 90.2% 5,585 22.3% 32 1689.6 18368.6
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 89.0%
LONG 1.9%
TAGS 0.3%
FIELDS 1.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. NS command - no next screen 35.4%
2. First word of command is invalid 30.4%
3. FIND command with invalid index name 9.7%
4. PS command - no previous screen 3.4%
5. DISPLAY command contains invalid word 2.8%
6. Search term missing from search command 1.9%
7. DATE search with unrecognized word 1.4%
8. Valid command at an inappropriate time 1.3%
9. Index invalid in current database 1.2%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 15.2%
2. LOCATE (BIO DB) 12.6%
3. FIND 9.2%
4. INDEXES 8.1%
5. COMMANDS 7.0%
6. Unrecognized term 6.7%
7. BIOSIS DATABASE 4.0%
8. MAIL 3.0%
9. UPDATE SEARCH 2.2%
10. Unrecognized term-reminders off 2.2%
11. All others 29.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.5%
2. First word of command is invalid 12.2%
3. FIND command with invalid index name 9.1%
4. FIND command with zero results 5.9%
5. DISPLAY command-first of >1 screen 5.2%
6. DISPLAY command - middle of >1 screen 4.9%
7. DISPLAY command - last of >1 screen 3.7%
8. FIND command retrieves >1 book 3.2%
9. NS command - no next screen 2.7%
10. DISPLAY command-complete in one screen 2.5%
11. All others 25.0%
Ten most frequent SHOW requests:
1. HISTORY 47.9%
2. MAIL STATUS 16.4%
3. SEARCH 13.9%
4. GLOSSARY 4.6%
5. SETTINGS 3.2%
6. BIOSIS NEWS 3.2%
7. SUPERTAXA SETTING 2.5%
8. SYSTEM NEWS 1.4%
9. MAIL SETTINGS 1.4%
10. DATABASES 1.1%
11. All others 4.3%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)