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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
- I( }9 P. d1 y' y" [to do-business # R1 d# ^" K! K: v8 h
rt random 3602 r3 u7 A6 O3 G
fd 1
- N  _. e+ P5 V, B, \ ifelse(other turtles-here != nobody)[
# S2 ~  c- I5 X* o   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.  K/ b% U7 ^9 }- }
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % }) N0 Z: h6 ~6 W% |  c
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, S% i6 G* y/ O4 X! n' l
   set [trade-record-one-len] of self length [trade-record-one] of self4 M' A0 n/ @5 Z; o* C9 s, v+ x
   set trade-record-current( list (timer) (random money-upper-limit))3 i. t4 A+ }1 ]# p

9 ~* y! f- ~8 F' C5 q% e6 L问题的提示如下:
! a" S% o/ U8 {9 B- O
: y' c6 D) A4 A2 ]error while turtle 50 running OF in procedure DO-BUSINESS
& X) [4 q9 h5 [+ W& B9 f! ~  called by procedure GO9 [4 w" @. q- q1 H3 W% |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 C. O" o5 K; P: \$ Y
(halted running of go)
/ d4 i9 R2 p, |, G# q
0 n9 J. I0 s+ o, b" W这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~4 C* ]* z  w* B5 V0 C
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教2 O* U$ ~3 J- q, P& P
globals[6 w# L* F! P( Z# B
xmax
* U$ G7 F/ p8 K' ]4 F) fymax8 l5 i  Q/ a% d/ n" {; p7 m0 m; @8 t
global-reputation-list, e( ?1 {" X/ t7 I/ h, A6 v

6 h7 g% {, F. J4 A; _7 g* G;;
每一个turtle的全局声誉都存在此LIST
& ?4 j4 l5 `9 S% Ocredibility-list/ O' E. T3 F. J" ^" |# Z4 M2 J4 u
;;
每一个turtle的评价可信度
8 O" S5 S2 l1 ^) e9 k' S* o( jhonest-service( ~" k, E7 E) U5 c
unhonest-service. J2 b8 F  G/ [# h* {2 B# I* }- c$ c
oscillation
. S% g8 Q! ~# o1 `  L2 P8 brand-dynamic
, |$ z( ?& r, Y8 H9 R5 r]
1 x3 J* \; U+ {
$ I. c' Z" f) ?6 M, W3 hturtles-own[
8 m. w% Z" n. G. v4 V. @trade-record-all' j; D+ r4 z0 o# _9 f/ v
;;a list of lists,
trade-record-one组成
3 I" O4 ?7 z2 ctrade-record-one
1 @: O' v  F# c! I. q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 n% R, `% J- k! B* G# i, @9 u" |2 `: g

# w) ^; V& I% C* f" G  Q;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
: F+ d) V/ v5 i# F$ T3 l! X$ Dtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]/ _0 H3 c( o: l( Y9 ]
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list' [: N/ p9 e, f; P
neighbor-total7 K. O# m3 R. v: i' \
;;
记录该turtle的邻居节点的数目% \; b: ^  ^# w8 J4 A( R% x
trade-time
$ l  D6 \3 f9 p7 q9 Z. S( |$ a4 i;;
当前发生交易的turtle的交易时间) n* ]9 S- R' f3 V6 P+ l2 O/ c. Q
appraise-give* J* v- E- e6 R
;;
当前发生交易时给出的评价  I- B8 F0 M2 a# V+ r/ T
appraise-receive4 e6 G* m7 \1 Z% [
;;
当前发生交易时收到的评价% a' N( s9 L* E: I# Q7 N
appraise-time
3 p+ z8 @; o/ C' ]6 X8 {;;
当前发生交易时的评价时间
. @" o% W2 y, w: S$ Q# glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ P- m5 e5 `2 X* m  W, H
trade-times-total6 k7 A' ~  Q& ^$ M6 m
;;
与当前turtle的交易总次数7 `* O4 o7 j' e
trade-money-total
" J3 E  \, w' J+ X- \; i;;
与当前turtle的交易总金额$ }+ V% n, }4 V5 V) c
local-reputation
2 S. p  ]8 L* |* f4 q" U9 s4 hglobal-reputation5 c( b3 B" A% P5 N) `  o
credibility7 C. N" `3 p, ]3 a% L
;;
评价可信度,每次交易后都需要更新% E8 g; z$ @( ]6 r2 ?0 ~
credibility-all
/ B* m% V) g. r4 P' o;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据+ v$ a# u- E( z. _. `6 a" I# C, D+ q

* e9 G( r6 B) g1 m;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
9 p5 c9 E0 ^/ U% wcredibility-one
8 ]7 e+ I$ o0 R0 F;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
/ r& B  x: ?) ~, u) F/ ^" e6 X8 lglobal-proportion
, _/ _$ h7 M" Gcustomer# C7 R) y2 A' y2 Q; \
customer-no# T% I& [4 [; q# b' k" w
trust-ok2 ~5 G# r# j3 C( Q( s" S
trade-record-one-len;;trade-record-one的长度3 b- m& W0 M& W
]' E; T/ b; O7 Q" V( m& x# j
7 E$ v: Y0 D9 e. g: b, V; X+ H
;;setup procedure! y/ q& ]0 k% _  T

) r- Z1 [; S, Z* L" i% ]& uto setup
( ?0 u9 Q! n1 L2 J5 D) c) K' u0 [: o: T9 q4 p- X
ca

6 ]% Y+ r& T4 X4 [, T0 o
3 H! V; J; y( Y4 r, Oinitialize-settings

  \7 N# p$ X) k+ P5 i
* @3 p2 F* z% ?4 M2 ~4 ~crt people [setup-turtles]

. M8 _+ X. {/ i+ V5 L5 m( [! c" H+ @9 |  a1 ^! O5 w" l
reset-timer

' K- W$ D2 Z: d. }8 x- A5 I6 f
5 d) i4 V3 m/ V! w) B) I& L" ipoll-class
4 |6 a/ Q& K- v  T) ?* u+ r2 n& G

7 M8 i0 c9 |! P* Y, |+ S. Dsetup-plots
) t' O& i) F; T) v5 h

" {4 v% U! Q# o7 Sdo-plots
, W8 R' C4 P+ @( b1 y) x" U- U
end$ S, p! B1 d0 j8 H! Z' a
2 S5 w: ~& }( n! x* l* r6 u- o
to initialize-settings2 ~3 f* M& c8 V2 n; q* i
/ E0 B8 [- V% c7 j% o
set global-reputation-list []

8 ~9 ~; Q* L* [5 G. x0 v) q/ ?4 c( k+ l9 E6 t' Q/ ^$ R1 z8 C; {
set credibility-list n-values people [0.5]

6 Q+ z. ]1 z0 H' T1 [7 ]+ a3 _0 P9 n9 a
set honest-service 0

4 ?# t+ K( O) P/ a& i% Q% o4 R
' A4 O# a. S' I2 y$ L1 Mset unhonest-service 0

5 E9 q: u  |. g$ Y* b+ H1 U0 |& d" M5 Y$ _: k. U
set oscillation 0

/ |) c2 ~' ]$ r! k1 g! Y, k2 E1 E3 m( d. S
set rand-dynamic 0

' v8 Y1 D6 X. v1 Q( ^end9 a! q% c- L7 o- ]: ?' l, e
/ m* e/ c  x9 `# {6 K
to setup-turtles
; P$ M+ X1 |$ m+ mset shape "person") i: K& [  h! P# U4 M( X: a" O6 V
setxy random-xcor random-ycor# H4 y- _# O% S
set trade-record-one []. R# f& x2 n' K5 z5 }& f
4 {0 ~2 Q* O2 s7 J1 m, K
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 ]# X- w! L. e5 |
; _+ k/ q# l; V. @2 N
set trade-record-current []
% \" ~9 v) J) Z! w4 gset credibility-receive []
- k+ a  s% w: U( k9 D6 ]set local-reputation 0.5
1 T$ M+ n" J  k9 ~* L# g# w, gset neighbor-total 0- @0 p7 {, I8 G2 ?+ y
set trade-times-total 0
4 }5 O1 {* F% s* [! N* K: jset trade-money-total 02 h3 b$ |. w& V* f+ R) M4 O
set customer nobody
; n( @9 m. a( k0 [+ l, Cset credibility-all n-values people [creat-credibility]
0 S" t9 q  E) Q! \7 xset credibility n-values people [-1]
6 q2 `* ]! d4 b* i; q6 W" K3 ]' ^get-color
) x. i! \+ J1 n9 T

* _) Y- \/ K  E8 Vend, c9 U3 d& N' o2 m7 C

0 f! i3 u& m1 Hto-report creat-credibility4 m* x- y' B/ f  o) b: d
report n-values people [0.5]' E4 L3 N0 `4 u) ~" B; F9 A& y. _6 K
end6 `. l- p) M2 h1 a/ h: a
  h% F: Z* N) q; L) o: t9 \6 E
to setup-plots
$ ]. C) G1 x7 U) J
0 s: z7 H. K+ `/ ]! ~5 cset xmax 30

$ x7 |( g& |* f# B  f; F% _
% e/ \$ @' F+ B! W; hset ymax 1.0
' Y3 i! J8 O. \. O; L5 z) U

! k* P8 ]1 Y0 j3 k5 U7 K* F# ^) |6 _clear-all-plots
9 Q' n7 v) Y. p. C! G+ K1 s
" Z; q8 M- q7 T
setup-plot1

! N6 c* P9 }8 b0 F
0 @/ U% E; k% r0 ?) E" ^setup-plot2

6 c; L7 E) P2 f) T2 f$ p) h3 p' D* X5 U& R+ \5 @' g( o4 ?
setup-plot3

5 d! j1 \, W, N5 o, i4 J0 wend1 D& \4 ^1 k" a$ I. p! m

' n1 P4 R. H4 W- B+ b: v;;run time procedures, S8 _+ g* G. `$ o* g

8 h" J; X5 S+ l8 V$ ^& j0 Kto go; J: G1 N1 {% w! Q+ C

$ t/ n$ D+ ^* w1 Cask turtles [do-business]

% b/ O; s0 N! d! X& m* rend
$ N2 Z5 ]; W3 T: J& F$ ^/ O
5 X( L1 D5 O1 h, }to do-business ) V2 H' T% y/ v4 u2 Y

( Y! Z3 G/ W0 X  |8 W/ O
( c" u8 B, p/ |. {4 Crt random 360
" {) [) p: z( i9 z  e' h, R

& n2 H7 b! }# L3 \fd 1

& Z% J8 R( G; y4 N/ [1 b
  w# z1 k6 a! `! ~' y9 l2 \$ Lifelse(other turtles-here != nobody)[

+ r; Y/ n8 |' _2 a% g- q6 _8 J. R- v6 v
set customer one-of other turtles-here
: u2 _9 k+ W: [9 t
# J1 g4 S6 s4 I5 ~
;; set [customer] of customer myself
; }4 G- l# R4 Q! V0 s
( R3 w* g, `) G' z* h6 }" o/ r
set [trade-record-one] of self item (([who] of customer) - 1)
7 C2 ~% `+ G+ _& V$ x[trade-record-all]of self
& N  l" ^. m5 [6 x& I4 `$ s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. H* ^* Z% w2 \7 ?2 j
% |9 u+ r# i: _, }" d# F
set [trade-record-one] of customer item (([who] of self) - 1)
0 Y, R9 X. i5 m! ~( v3 q[trade-record-all]of customer

6 u% \3 e$ H/ q! ~% y6 N
2 @* O: K+ l% S+ a1 b) ~set [trade-record-one-len] of self length [trade-record-one] of self
4 M" C2 i5 T& O1 _' n
3 w% v" a/ U# X( X
set trade-record-current( list (timer) (random money-upper-limit))

/ M' l/ O: v+ ?
- @  {1 s1 Q  Eask self [do-trust]
  Z2 b9 h# b( U;;
先求ij的信任度
$ ?: v! h$ Z5 I& q. b+ S! H3 T) x  }. R
if ([trust-ok] of self)/ Z. U8 e! K! H/ T. m  J2 P% o
;;
根据ij的信任度来决定是否与j进行交易[
0 ^7 e1 `- Q! ~. v( ?, }3 Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 w: @3 y5 Q* n  P$ W! \9 u: Z  \
[
/ {* M5 j4 z) E" ^, f
5 t: V; J; y$ j  m, L; V- Q
do-trade
% w3 ^' t; S3 w

3 B( [) Q- {. X9 Q  g4 _9 l4 ?% _$ yupdate-credibility-ijl

8 O% @+ N# ]4 `% t# M
% e; o% m' d/ u( C6 [) Z& supdate-credibility-list1 u4 E) b' H8 z1 d; R

+ D* E7 j# L. p' b$ c* Y) D2 o. b+ w, L" c* r) B! {3 L' B' L
update-global-reputation-list

2 y9 ^0 h7 p( n1 z5 J2 I% T3 j/ h$ l/ J1 e! C
poll-class
6 ^( P% e% X/ ?

% ^3 K/ J$ m5 s; p; ~get-color
" e. D6 ~0 [: I2 u9 Y9 N+ c

9 V) ?0 F% m! x. Q, z% T/ C]]
, T/ T- R0 f# p! k* {( m$ }1 u
# p* W# G! y' ^: {4 n# E;;
如果所得的信任度满足条件,则进行交易
; o6 {  ?. G+ x: p+ W) F- z, A9 n/ p5 K7 ?' l/ d
[
1 X( Q  z  d  Q- s) g/ @' f

6 Q) {* a: H$ [' _# u) E# g8 Prt random 360

$ O2 @, {' `+ S2 X# `( S0 e: E! v3 q3 \% K! T* P
fd 1
& O, M3 v0 r9 _% t1 n2 K& k& x

% E6 i; `1 \# ~2 V) U]

2 g' ?& H7 m( y9 i+ H8 o4 e7 _6 Q, k$ _' }/ ~0 H" `: N* t
end
. J( h; }7 j4 ]2 C6 ~

8 O" _9 d* x) jto do-trust
: P4 n7 `+ `2 rset trust-ok False
5 ]3 R' H6 K* x* [# _0 n4 X3 F
. j' [0 D# c) f) }+ J
% w6 R5 P; }2 o# B$ P; x, T& S
let max-trade-times 0
) N4 k* n6 P: w$ s% k2 O# kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' }7 w4 q7 c+ q5 y* E! t: u+ [let max-trade-money 0
4 M  b* g- r# f% aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: `/ c- Y0 r$ F* `$ n) u  h3 C( N6 [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' u2 U, H& o+ k: n7 H+ i

) T4 c% g5 S' M' U' S

& b* z, c( u0 Z4 z7 H6 }. cget-global-proportion
  ^) Y5 }8 C% g9 z: s& Ilet trust-value) e4 E( F4 G2 E
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, @+ l- @3 I) D2 o
if(trust-value > trade-trust-value)
1 g6 @! @$ ]+ ^[set trust-ok true]6 ^. r4 ?" R9 ]" y9 y; v1 F
end2 V8 f. D, u+ A8 z+ t
/ [( l# @8 _2 ^+ D: b
to get-global-proportion
. Y  v1 b' g" @+ ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" \, G5 F7 J0 j. D
[set global-proportion 0]8 e  d  R2 x8 k2 b+ B$ y$ y+ y
[let i 0! k7 ^( L2 r% A- W: S! H( j/ u
let sum-money 06 G' [, E0 w) v0 U& X1 e
while[ i < people]" H# w1 E- W. L+ m- ]
[1 m* y. p6 w- h. \
if( length (item i5 c+ S6 ^3 N7 l6 j+ X
[trade-record-all] of customer) > 3 )
" u& g" }- W3 g* t& y
[
& {( D7 G9 ?6 N+ Hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 K* A$ R( E$ ^8 w
]
# b2 X) v, n1 s$ F! L: g4 ?; u]
2 m- I9 J0 i$ C# O8 n7 Q- [' \let j 0
% W- X; t5 q& H0 clet note 0( o+ e% r  D% E1 ]4 ~, O( t( C# @( L
while[ j < people]5 N: z2 {2 h/ R! O2 [
[# ?0 i- E3 P; r8 o8 ~* I8 g
if( length (item i
* U+ [+ _5 z: C" [& B& a& t[trade-record-all] of customer) > 3 )
6 S9 d+ q& |: y6 F5 y
[
& x7 Z1 m0 d1 E, B0 O0 hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 q" f5 [' m! ^  e( Z8 W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: _( R3 e7 ~2 ~  C; @9 p+ |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ Q# \6 t6 q! k& j, m* E' f
]
% J+ m8 H( C" u& A. c* K, c]* X- c0 y! i5 z2 @3 x) S* F; |# j
set global-proportion note
4 M6 p$ _/ c% i" H+ i/ g2 [: D" T]4 E6 s) A4 {9 J& a
end* _4 {1 D4 f/ b/ U3 e0 q2 `

0 }* K3 Y; e& |$ y; e" T! g& Uto do-trade, _  G  j' U+ U
;;
这个过程实际上是给双方作出评价的过程
- k. \& v; H' F" W9 bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 Z/ N/ ]: F! R' M' f% Z6 ?5 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% T, Z% Z# q8 y, N0 f1 A$ kset trade-record-current lput(timer) trade-record-current
" E2 S1 R1 D, w# J;;
评价时间# n1 B/ Y9 k  ~9 a7 a8 R; F
ask myself [2 U' a' d4 Q+ Z! a3 U
update-local-reputation- X1 I* f' |: S) x& l# }
set trade-record-current lput([local-reputation] of myself) trade-record-current2 n9 H) U+ {0 n- f1 h5 E2 v9 @/ c4 L
]
5 H$ L9 _# ^: d8 W; p& H# w$ O+ lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* V, @2 V" W- b6 B0 H
;;
将此次交易的记录加入到trade-record-one
, [8 Q* Q  P# H" t1 \5 T( xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, K$ `) n5 x- \6 E- xlet note (item 2 trade-record-current )
( w7 J9 u4 H' F  S7 Z0 \) @2 Gset trade-record-current
' S# G: q9 t7 p  _' [(replace-item 2 trade-record-current (item 3 trade-record-current))

. ?2 a1 O. z$ j% T# t2 wset trade-record-current' a. b( V9 N5 K  P- H" x/ `; C
(replace-item 3 trade-record-current note)
. X7 B- T/ Z9 ~9 G. C
0 K! z' {4 F( f; D/ x. |& R
+ d4 C  a# ]. `/ b: C
ask customer [0 V6 p' `. y0 k) J6 |0 ^
update-local-reputation
; ^. |7 Z. m6 `/ U" Pset trade-record-current
, Y$ g6 M' h; w6 c0 b7 K(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 v( ?/ e7 \3 S
]
* f6 G3 m6 v" l8 ^3 {& n) K# r8 S$ j: {
0 M( D# W8 A8 R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ L; W5 r4 v& v1 X

, W! j- }# N# `( f! u6 cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 T5 ?. L1 a/ @$ X% ~;;
将此次交易的记录加入到customertrade-record-all* r1 h) v2 j/ d' m( @
end
( s! j* u1 e  x# k
, K8 h. ?) e6 c. C$ N2 A+ Fto update-local-reputation9 q/ b+ n1 A8 L1 A3 W
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 v+ v8 Z4 Y$ X# r" r1 }% `4 W# z! P  j( N$ |/ L5 J
  ?  k0 a6 [, b# X9 @
;;if [trade-record-one-len] of myself > 3

7 [* }3 u8 Z4 |update-neighbor-total  x" h: h! @3 e9 f+ K. a0 `% P
;;
更新邻居节点的数目,在此进行1 I* g$ C' K3 K6 [
let i 39 A% I! ^5 b. r  }0 @
let sum-time 0
  Z: s' ^% I+ X: y" fwhile[i < [trade-record-one-len] of myself]
: L0 E) u; v9 u[
- [1 U# e/ E3 t" Z' V: nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: }, }. D, C6 Rset i5 S- W" ?5 |/ x, ]( V
( i + 1)
4 Q  @3 B; |( p  G9 ^. \' T! |
]( Q/ X( F. g) e
let j 33 n+ j0 q' y# i$ K4 ^3 {
let sum-money 0
% a. W) z0 T9 P* u5 j  O) Swhile[j < [trade-record-one-len] of myself]$ ?% n0 p$ j8 N4 @1 i9 N
[
) Q9 P8 p, X( k5 Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ W8 e' m2 Y! m4 y/ [2 j0 q. m
set j
: [( i$ W0 F, L/ X* B+ ^( j + 1)

4 ]* i- k* d: I* }* G! M]" p, t  b1 P& n, s, a  b
let k 3( ?- z) ?" z% W
let power 0
! L1 o; E# t, h! plet local 0& b9 }( E+ {' @" @- i0 o: P- U
while [k <[trade-record-one-len] of myself]' V$ Z4 Q8 S& P' i
[5 ]- X: m# n* d8 ^
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) $ ~& k" A; y2 B; K& O$ D& K
set k (k + 1)
9 d) ~5 s' H# O4 q# n" h]
4 G; u9 g5 n$ V8 z1 {, _9 r7 cset [local-reputation] of myself (local)
( x5 {% n- G) ~2 O2 Rend% o9 l% [. g5 h' a- B

; w6 q2 P- r* W; S- Ato update-neighbor-total
% A9 H& u' {1 g# d& e8 p3 o( ?" S& I; o4 G' M! E& g
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; K. t* I7 i0 L- a# |- d2 v
: N$ Y; a, g- I' J7 ]

9 _% Q/ T( s! z: f3 D/ Xend4 Q3 w& I; H  J( i9 V% @

, j" w+ |; W8 L0 Hto update-credibility-ijl
. N3 |! R- L+ z% }, N6 ]8 E5 U9 g- I* Z; f; m
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
3 w# I1 Y: [* I! ]& tlet l 01 z% ?7 L9 S& `8 G
while[ l < people ]
0 ~% L; [; M$ y+ k8 q/ ~8 {+ S;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价) t+ U  o) n. {* j3 S
[
1 G5 z9 v. \; H2 alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: s9 F- l3 a& F. V* ]8 Xif (trade-record-one-j-l-len > 3): `- {* M8 T7 Y9 T, `$ G
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one: |4 `1 [* p, Y4 z
let i 3
) y4 U9 D; t0 D- Y7 l( ^0 A' @) jlet sum-time 0! z' f5 z- M2 @: r$ z
while[i < trade-record-one-len]
# j9 C# |$ ?9 Q. Q% b9 ^/ F5 j# I[; w/ m' w$ q; ^6 k0 B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ w( I/ U# y( {7 e$ E. m, U, gset i
0 T: R% f' ]1 Q% X% K* m6 Y( i + 1)

/ }' y1 ?5 r% U5 x. A  N( R: O( b]
- `  T$ s0 S. y* k; \/ C' b9 elet credibility-i-j-l 0
. |8 W8 b5 q% a;;i
评价(jjl的评价)- y, b; t+ h8 h- d
let j 3
& J3 b1 y8 Y; Jlet k 4$ ~: R+ j1 i3 D, V
while[j < trade-record-one-len]7 r( v7 @) ]5 `/ e
[
0 Q: W8 b* K8 \1 m3 G6 P! Bwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉  Q/ d% N* t8 W1 q$ W
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
5 N$ s6 F& H; Z3 {1 iset j
( w, J' b0 i; ~; o: [3 M( j + 1)
& q4 H% F$ i0 Q- T
]
5 P8 {( k7 y' F& d1 vset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( Y- P/ e( X: r2 P3 \

) H% D" @; k2 R- N/ G1 K; |4 g

4 F  U2 T% W% D: ]3 s6 Z' \: Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 t: M0 S8 h1 [" p# J; X. d" ]
;;
及时更新il的评价质量的评价
7 y/ C2 k- t7 C: w( hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" K, H% Z: [% ^3 D! L* a9 P8 Uset l (l + 1)' r- M3 G; i2 n. M, f
]
3 v; M* C2 F* O( n9 cend
5 e7 n: S# B& ], Z* T* |
2 U' D# V4 S, @9 l$ ito update-credibility-list# i6 z2 _4 ~+ Z: ]# G$ k" g+ R
let i 0) Z4 p$ p" C; X+ z1 v
while[i < people]
0 e  B& a% }9 z  ^[
" U; W0 ~: X/ ~! s* Ulet j 0- w; i: k1 I1 y* a
let note 0
/ K. H1 s& a5 ^9 ~- L5 Ylet k 02 P: m5 d4 i) l& N3 @6 @+ J) ?
;;
计作出过评价的邻居节点的数目
' d, r1 L! s6 }) Y3 O1 U- b+ X( cwhile[j < people]
* G& ~; K" e9 [. K2 L& o* ?' H[
/ k/ p6 }$ W: n5 M/ h+ N( g7 y1 ]if (item j( [credibility] of turtle (i + 1)) != -1)  o$ h) P% N( f; J
;;
判断是否给本turtle的评价质量做出过评价的节点
! I8 Q* f& i: V2 O4 A* J[set note (note + item j ([credibility]of turtle (i + 1)))
0 g  c  @( M* M$ J# {;;*(exp (-(people - 2)))/(people - 2))]
# e2 B5 n* D! U
set k (k + 1): o7 A' J; h- x2 n% p
]" M% g# k. Z/ @' @1 f6 ~' Z
set j (j + 1)
9 g( j* W0 ~0 {% P]
0 J, s- W. r" b2 D% Y$ ]: k) Dset note (note *(exp (- (1 / k)))/ k)
3 B& M$ g7 U) e' p1 aset credibility-list (replace-item i credibility-list note)2 q3 F0 k& V+ V- u' V
set i (i + 1)
; q5 j) l, O. D5 `5 k]
* N3 h7 B, V- l3 `end3 M5 ^% t% [# p  C  D& f

" p2 J- x, B7 ito update-global-reputation-list& e: \) w$ S7 e% Z- C
let j 0" J/ x3 X! n$ R* S+ t! Z- o- Y
while[j < people]7 s: Q: E: f1 P3 ^  \& l
[" R" i5 ~; C4 ^; [3 m/ w
let new 0
3 @6 z. f& T2 _;;
暂存新的一个全局声誉* {  `: S4 z, p- ?- [# ?/ o5 ^
let i 0
8 R6 x/ l/ L" e) [5 llet sum-money 07 I8 g  N, {3 V6 W1 P
let credibility-money 0* V1 i" X: }  o$ ?" Y
while [i < people]2 a1 j' Q4 P. T1 _* {. \
[
0 c9 D' t* a0 a9 q% v' mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) y; v3 E  O$ ?; S: l1 [/ Z! r* Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 k3 |: ~; T% i5 X$ pset i (i + 1)
/ o1 h( ~; ^9 D( n6 B! f]
' ^9 z8 I- G0 y2 Xlet k 00 R/ g) A4 i3 ?$ z5 Z5 y& {
let new1 0. n! n9 F0 p  F8 W4 p' W
while [k < people]+ u+ Y) b) a6 X; \# {: c# I
[+ \$ ~4 J7 u( H; I" C6 W3 ]
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
' Q: p0 |% }1 C! |+ l3 {- gset k (k + 1)8 m$ m  V% E6 ?$ F" Q, Y. x
]
; s6 I& A4 F: G' B1 xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + h3 \, l2 G" _1 Y* I1 D
set global-reputation-list (replace-item j global-reputation-list new)  q& g; y$ K+ t1 k
set j (j + 1); O7 h5 R  G; k" F2 @: \
]
; J( I% g3 d, b- Q( tend# m% M& }( L. E

6 G! R+ c# r6 \3 w3 \1 E2 P9 g( {( F- i6 _) d& j' l7 p0 D5 L; I
2 B0 M; e" {' P
to get-color
  \. t1 X9 G  k/ ?# b) F6 f4 E
; ~8 M. K5 x( Mset color blue

* `$ _7 I8 e: N, R/ D# w, C/ y* vend; y  }3 Z; W' U. T% A$ ]

: Y  g1 J' U1 w4 j1 Q7 t* fto poll-class* M1 V9 O8 q( W" S# q# m
end! W$ o+ l. [  q. _) K( |( l

) `& Y3 V) M% h5 u" Vto setup-plot1
$ s% j' w& j% k0 C% U9 P1 K% S- _) E  T8 u3 A
set-current-plot "Trends-of-Local-reputation"
5 \8 G# f% u6 p3 {. q- J

, I/ _# f" o3 _4 |. u4 {2 `' rset-plot-x-range 0 xmax
" O/ u% F9 H5 d& o5 ]# K$ [# X
- B3 H. l8 x' N& L
set-plot-y-range 0.0 ymax

1 v) A" W( o# f# Y; Qend
8 O% w, M) n0 q% c6 I, H: N2 n' q! f. @1 S
to setup-plot2
; s# Q) X' _1 j. \& {+ H9 o" F$ ?3 S  z$ L4 u& Z5 m& |" r9 |  _6 e
set-current-plot "Trends-of-global-reputation"
1 o( c: u! f9 s& }

+ h& Z+ I8 Q  o# S$ U+ o% }set-plot-x-range 0 xmax
3 f( ]: t: z: C" E$ c+ f
3 U' g, s5 u% L9 ~- w" T/ g
set-plot-y-range 0.0 ymax
% g5 A5 v9 i6 v. X# g( Z
end
9 Q: l7 N9 x% u, M2 P( P1 i1 X/ I
6 T9 E: F( ]1 Q. oto setup-plot3  \: Q' \% f) i6 t# |( ^0 @
- P1 q4 m! q# m  @4 Y! [8 e
set-current-plot "Trends-of-credibility"
  p* A4 c. U' j$ H) R1 _! m
; X4 \; L+ m% s, O: z) C
set-plot-x-range 0 xmax
0 m! k) P" M5 }+ z
3 ?  P* \0 R& }' P
set-plot-y-range 0.0 ymax
5 i$ r8 i- ]0 C3 T7 v& x/ w
end/ y: O  w# ~7 v( r- D. K
2 M& A" i* D! V! n+ Q
to do-plots
! G7 Q  P7 G3 [9 R5 E: xset-current-plot "Trends-of-Local-reputation"" y, J3 M. W8 T& b! Y
set-current-plot-pen "Honest service"- o, E2 m2 M+ e
end
  Q9 X4 ?* U9 y5 V- t* r
0 T6 M* ]* Y5 z[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.$ Y3 g2 H$ N# g7 z5 p5 d
& N, d- Q# `) m6 B7 w& l& y
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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