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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:" O3 |% J" N6 W/ y. X- R
to do-business
; |# N3 {# E" r rt random 360
7 z$ o# P" M. | fd 1
7 y9 C, I, M# A ifelse(other turtles-here != nobody)[6 Z7 Z7 L$ T, X8 `( E
   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.
) U* Z9 b- l( @5 u. W, X9 C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' u- y0 q: c# k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& E/ q6 k7 N4 s: {3 e3 U2 j( a   set [trade-record-one-len] of self length [trade-record-one] of self& G! s& P) L7 J# e7 U
   set trade-record-current( list (timer) (random money-upper-limit))
, w6 T' J* V3 e+ H  N9 d3 u# B/ z3 P. B) o
问题的提示如下:- S& o9 t" Y% n; J; x* g* A
) G+ p1 W3 E2 }4 Z
error while turtle 50 running OF in procedure DO-BUSINESS
; ]7 Y: _* }) {  called by procedure GO* }3 C/ _- g1 h/ ~% ?7 v. x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& G( g, Z# t% E7 w! q
(halted running of go)
8 W7 ^- b3 ?: N# n5 p. E' W! m1 x, _  N
1 d& P1 q" f3 E# z) ^( C) r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~~
8 G6 x" L  r! ~7 }( N0 U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
0 f- P$ ?" X! o. Kglobals[
; B: N( @3 ]1 {xmax
1 |* b6 ^0 t3 O2 o6 I! Iymax
6 }, o, @  N3 x0 N/ ]- dglobal-reputation-list$ q7 s& t. ?: Z1 e4 }
0 J) I1 n: }9 H  E% c
;;
每一个turtle的全局声誉都存在此LIST/ t4 q; O  ?5 q
credibility-list
% n  b* D/ O; m+ b;;
每一个turtle的评价可信度
# N9 ^" A' U3 q9 s# ^# [2 \/ @9 Mhonest-service% y' W1 a6 [1 P' J
unhonest-service) y# g) R' r8 Z6 ^, V$ ^( u, T
oscillation
% |8 @0 i" v8 N' V0 K+ Crand-dynamic( U; N) J+ X7 }& ~
]
8 @  K) J3 ^" \; @0 [' h; P( D, `! k' |5 Z2 A# f7 K  R3 S$ Y& k- f
turtles-own[
/ r9 y+ }! y6 ^3 Z# Atrade-record-all  W# ]3 s0 d% G0 B
;;a list of lists,
trade-record-one组成
# r' b2 @" k  [7 `8 Ktrade-record-one
" l' b: v; a  }" p- b0 t) Z; 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
; l( [5 w4 j1 |5 y  p1 E; w# e
4 M" c5 K; Q6 v( B3 s5 ?, `) r;;[
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]]' t* N$ E; w# }
trade-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]
) O( x  m& _' V5 Lcredibility-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( L1 B3 @0 t- Q+ D* Y! a" C8 w9 Q
neighbor-total
. F* R, G1 |0 S;;
记录该turtle的邻居节点的数目) J/ _& s1 h2 r3 ~$ P- S- X
trade-time
# t5 x, ~, Z+ D; P+ E9 U;;
当前发生交易的turtle的交易时间
8 g5 K% @2 Z- t( r, ]2 _6 Rappraise-give& g8 Z& ?1 v* A1 I& o4 x
;;
当前发生交易时给出的评价2 A5 t3 {+ H+ ?& ~' A! w5 k
appraise-receive$ R9 ^& Z3 }% {) ~. K
;;
当前发生交易时收到的评价) `5 _6 ?" X! x8 D2 _3 |
appraise-time. x2 L6 t4 D% s$ N7 u, H6 m
;;
当前发生交易时的评价时间0 B2 W" l( m! l4 f* c" j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; Q0 M6 y5 O* S) S( T8 i# ~/ E8 a
trade-times-total
+ w) A  {3 j: t& O4 y+ i8 x;;
与当前turtle的交易总次数" v. D3 A  L/ C' ]; _
trade-money-total9 z  e0 H( \; B
;;
与当前turtle的交易总金额
; V3 `- `1 v0 e) i' M5 K, c+ wlocal-reputation4 ~; R1 {, S4 w/ e
global-reputation
/ f/ V1 q. g2 f6 z  g$ v6 R- z+ Ncredibility# w5 |" r' c; e
;;
评价可信度,每次交易后都需要更新2 j! |: ^% |0 t4 J" P
credibility-all
, t; e7 ^1 y) f;;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* R# C$ e7 F4 U
1 a$ a* U+ l8 _+ |
;;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0.51 `& r1 D  f9 h! b  g
credibility-one
. d2 g2 J$ P3 {+ x) E1 Z1 m- o;;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people5 c$ P9 n3 s" _/ B
global-proportion8 y# g2 a1 ~( H: Y3 y- L6 K$ K
customer3 U  a  f3 n( @" j- L
customer-no
/ g' G# ^7 T& }1 E9 A' ]) Z* Btrust-ok/ [1 W9 S  y3 [% n0 L
trade-record-one-len;;trade-record-one的长度/ G8 F. B' o$ D4 z* Q' H, k
]
) E" y3 a9 W; Z7 V, `& [
1 j$ v$ T& o; U0 ^* |;;setup procedure
' V4 c" C* {  q: n) F" @
1 c' f: i: Y. K" Sto setup1 n8 ^' c. i6 ^6 E
" Y* s$ L. k9 }$ Q3 N$ u: A
ca
* }) z( P& O) X$ O5 A/ l

8 t, h+ q& F/ z8 t) jinitialize-settings

4 M. M) O" w1 i
0 ]3 I) i- r" Y5 J  r3 R7 m9 jcrt people [setup-turtles]

: Y* G. i0 S& ?7 N( e( S  z& g
% |* V+ E% \6 L9 h8 c5 mreset-timer
* u) _0 z) Z7 i  j" t7 z
' P2 C) ?8 ~& r4 j" p
poll-class
5 j8 b/ }  W6 |1 v2 l1 |4 u
/ D: Z5 f* L$ X% Z$ W
setup-plots
( i9 @% w0 y  L4 z! `6 c/ m& w1 h% S

0 {% F" B) r" R9 Q2 r  E; Pdo-plots
' a; n. C7 T% c) j
end
9 k% M& b- s5 B8 Y1 t* ^6 V4 F. z1 R3 p6 ~& ~, W
to initialize-settings. s% C4 |  Q, D/ U4 U

4 {, d7 p. T6 H3 Eset global-reputation-list []

2 b3 h: r# Y* h, g; |
) o  _; ?' H& f; s8 F/ S9 s. t( rset credibility-list n-values people [0.5]

. n' {8 }; e( X; Q3 J; a! Z# ~4 S. V& u
set honest-service 0

3 Y$ c/ H% e6 b9 s" P7 R1 }) s& w
set unhonest-service 0

: V9 y+ c/ H: ?) ~
* \- Q4 i9 `! Rset oscillation 0

9 I1 D8 M' L+ g1 ]( `
$ _4 v* r" Z- ?) y9 n& ?% X+ `set rand-dynamic 0

7 z1 j8 o5 Z) {* s+ b2 f/ Pend+ u: i& n$ J4 f5 m: D- ?
9 X2 y$ g+ i6 F  O
to setup-turtles + m. ]1 F: X# q1 X! t: m
set shape "person"& H, t0 r3 Z. ~
setxy random-xcor random-ycor; A& J- o" l- _8 ~/ F! [5 @9 \
set trade-record-one []
6 U! b% P. z5 g- D2 _+ X# e
) P* l5 ~  g! ^1 q$ u' z  S
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 ]. a7 b! J. }0 ^9 x

- k- H, l$ j1 i1 W4 s9 Z( Kset trade-record-current []' j4 ]1 c, d- @( E
set credibility-receive []
. Y4 y3 m2 {: ~+ Z; p/ ^1 K; fset local-reputation 0.5
7 H$ ~; F9 Z9 x8 C4 Tset neighbor-total 0% h+ r( ?3 Y, d9 X- F
set trade-times-total 0
! F( f: J$ T# u* Z6 {6 y$ ^) `  q" yset trade-money-total 0- F. u6 F* t! A+ a; X2 z
set customer nobody3 h" \* T* D6 g. W; h8 a
set credibility-all n-values people [creat-credibility]6 W1 K" n- A4 l: S) \
set credibility n-values people [-1]
, W# K* O. G, J# r$ J1 qget-color# A. m& ?) M3 V
& A' y2 Q: Z6 m6 c  K9 v
end" s2 I; G/ }) Q' o, E

3 R& v* U6 m; Q: q% t0 p# hto-report creat-credibility
( I* Q6 J: p" T; g" Hreport n-values people [0.5]
) _  ~  c+ G- R7 m0 l, w6 ~end
, i! U  g5 T/ ^. P% x
! ?; r. `- U: e% gto setup-plots
8 _" _7 l# F; E6 R
1 Q' m0 A5 _$ z8 oset xmax 30

* [1 o1 |" @9 G' ]
2 q, ]( R  m2 k# C+ Y$ w+ X$ ^set ymax 1.0
9 r: N% Q0 k7 y8 o6 f

/ w; G3 ?, ~' C' e; [. G3 Vclear-all-plots

5 s7 h, ?* }* K% k2 |. z5 J; A7 k  @) M3 B
setup-plot1

1 W' Y4 o; k" G5 E$ c& `, E
; h4 |/ i$ m+ ~( o' ^setup-plot2
: ^" Y0 o) @5 R4 Y8 [9 X
) w1 l! Y2 l" \& g: b7 Q/ y
setup-plot3

# f. n0 o2 k6 F! \0 ?end  c* g8 @# h8 h% {5 P/ g" T; ~) N
2 |+ A- G7 Z" I- h
;;run time procedures
* O9 ?1 h4 C, Y( [% a$ t! S" {0 P$ ^7 H0 b6 F1 k* E, e/ o8 L
to go
/ d- j# \0 Z( ^# Y5 R! K1 }; f/ O! O) t
ask turtles [do-business]

8 h- n0 ?, g. n3 ^4 Z" L# Kend
/ X2 l  A4 I/ m5 I4 L4 B" ~( t8 R  n
! f* U  s6 y' X' R1 ^" Wto do-business ' ]( v$ `8 }+ I+ l4 m

% Z7 ]  Q& S3 r3 H" k0 z8 A. T
7 c" k, I" a" a# |rt random 360
) X: M0 B1 Q) v

: ]3 y2 `# Y$ @) d! K9 T$ mfd 1
1 ]% D4 s& P4 G- H" t. @, [
6 B6 O! u; K' r8 A9 O
ifelse(other turtles-here != nobody)[

4 P3 o* m4 P$ B, `( o
2 r7 q3 M$ J2 u5 sset customer one-of other turtles-here

/ v% i0 }0 ^3 `" j5 Q' t! B" l
( ^% L/ f; B0 t$ S* \, d;; set [customer] of customer myself
5 w3 F' b2 y: g* |2 E
& s5 B% n) g, [* |3 a
set [trade-record-one] of self item (([who] of customer) - 1)
4 t: A" ^; T9 n$ E+ V  f! q0 W[trade-record-all]of self
, U! a7 y0 _( Q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" Z8 R2 W9 J3 e- d: e

6 J+ B$ K7 K0 p6 g9 i8 nset [trade-record-one] of customer item (([who] of self) - 1)
( m8 {6 Q+ ~6 o# E[trade-record-all]of customer
/ y% h: b/ z' U; J8 k* A
! {$ c) s2 ]: B5 Y
set [trade-record-one-len] of self length [trade-record-one] of self
/ V" _% F+ W9 g
* W7 e% A' m& [! T# B
set trade-record-current( list (timer) (random money-upper-limit))
2 w  a: W6 }. j& o' e( v4 m% _" \

: j/ v8 u" B% r% q4 Z8 O  vask self [do-trust]# x, x& f& c3 R
;;
先求ij的信任度
% @, c( `# M  C# ?9 r& R  u3 R5 k2 `7 J) }4 c3 C
if ([trust-ok] of self)
+ L: U! z) X( c% c* z;;
根据ij的信任度来决定是否与j进行交易[
7 r1 _# {/ `5 H: ?ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. S6 T* S. c0 g2 J' w* p  X/ j4 X. ^: W7 l0 W1 h% H2 E
[

+ @1 x4 _3 C9 X& D* s, D+ y
1 h' Q9 v) ^/ g" R' Bdo-trade
8 n, r5 ?: Q. J, Q9 }" N

+ q. A; ?- x1 Q1 H7 Nupdate-credibility-ijl

4 z9 |; A) V- n5 I" X' h4 c; m& V8 {- `5 n
update-credibility-list0 V  H* D6 [) e2 o- K/ r- A# v# B& e
- r8 a! R" x7 s' Q! y# K

# h4 B: C. G6 b7 m5 b% l" V1 qupdate-global-reputation-list
/ H+ q6 m6 L5 G$ y* b% \# K

+ @& c% X5 O/ X8 u$ @4 kpoll-class

' x5 Q" c' O  q- C4 N( K( z9 k- }' G- U) Q" T4 O" z
get-color

! R  P  p" z: q$ q: j, F
/ X1 r6 ~7 c) R4 A6 t+ H. _]]
! m$ r- A- U8 G: i1 ?" J
4 F1 ]  s% m3 e% Z* p2 d2 s;;
如果所得的信任度满足条件,则进行交易6 G  L: R5 ]: H  x6 W8 E

1 \1 `0 F. Q* O: K8 k/ i[
8 w4 l* {1 x" N% N
/ Z, {( U2 b( O0 U- @
rt random 360
- r: N& W' \% Z- H- S7 ?2 l

" @/ V8 ?5 l# N# c( n0 Hfd 1
& k8 B4 o( b* H  p
' n+ n; k4 m8 S
]
; d% U! j" G4 M! t/ @( X4 [* C# s

- q+ T/ `7 [# s% o4 l3 ]3 cend

! z5 S' W" \2 W1 C+ ~/ o
$ C' g! H  V; }/ X4 ], `to do-trust - P# a, p: k2 g; b
set trust-ok False! S* V" H# Z7 Y: V) J  ^
7 Q7 j2 D  _2 G4 w1 {

; I2 t& ]6 B+ m, `let max-trade-times 05 b, }: F/ Y% `3 S5 {$ ]6 Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ q! b, `5 X2 b+ z  `* ?$ W( L  o
let max-trade-money 0
! q6 G) }  R5 f6 lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: G% f* Q0 |1 I4 f# U% D1 y5 M! Plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" C8 F4 v% a6 H; ~

: V5 y. p/ p. F- K4 \9 P
, @6 N$ T( W, T1 F* x: Q' V+ U) f
get-global-proportion9 _3 z! B, q3 I  r- Q& e
let trust-value
$ H/ J$ W2 w% n) Vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: K7 K1 \- f2 C1 ~
if(trust-value > trade-trust-value)
) X3 J! G. W7 ]- h7 z6 u' l$ s$ D% u  x" P[set trust-ok true]
( ^1 V5 L2 W8 [' gend
) x  `& i" k, ]
$ K3 j+ g: o( u* p; y# Bto get-global-proportion' }) Q. g# z- B0 A8 R$ f' X* ^5 m' {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% I3 y  [4 c) P  D[set global-proportion 0]0 k- B* W5 B  w& m0 m6 s6 f
[let i 0
" ^; i/ y9 r/ q6 @. h, g- z: Klet sum-money 04 N$ X0 H  e* J
while[ i < people]
0 S6 ]/ {, c# a; ?- i[' w  q6 E* R5 M4 R! I
if( length (item i
0 R3 y* e2 V! _8 N9 h! v[trade-record-all] of customer) > 3 )

  Z; V" G- A' J0 U) \[
5 d; r8 x% v" i1 x" Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% K$ \9 k# u7 h
]2 x6 t' Y; k' N' g% I4 c. f
]
7 k' a! z1 R- L; Glet j 0- d0 Q7 \! Z; ?) Y' k3 G' @
let note 0
1 [; b* F7 D7 `2 o$ Q: jwhile[ j < people]
" |6 g/ [  I" A& p, N[
% h" u9 s# X; B# U/ P5 sif( length (item i8 t; I: |1 y( w6 d
[trade-record-all] of customer) > 3 )
! c( L0 I2 U* ?( W- m1 C
[
; N  y( T! i7 G' K* W7 T1 W+ ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ F8 `4 X5 ^. A- c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 F% V4 U" O% I1 I1 o: j" F+ P$ V4 ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ a/ v$ d8 ~4 x' f3 s
]
' }8 I% R) ?% h8 J* I2 ?8 k]) c9 |7 K  M4 a, K( D
set global-proportion note
; s" s, n; d, T9 [! V: @]8 Q& H$ b6 m! a% y: D" i% J" p* Q
end* a1 Z/ R5 M: Z3 ?: X- W/ |& k
7 G, Y7 k8 C5 q- G$ g8 V
to do-trade
+ E* O) c9 F  {, P  l;;
这个过程实际上是给双方作出评价的过程9 P7 R. ^0 M( ?2 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 G* t; L( r) F- o- i3 z) I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ H; L* I1 E7 b) `set trade-record-current lput(timer) trade-record-current  M6 H& n' o$ l. k6 c% v4 ~
;;
评价时间
) Y& p% T+ @8 p- w. Y4 Q0 }, Bask myself [
+ ^$ J  F, L; Y7 Jupdate-local-reputation7 i* c, F7 }# D6 L& V
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 Q) K0 I5 \2 j2 ?9 Z. U% f], v. m% p! U+ `. p. p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 r4 J# S: y. m' z3 r6 h;;
将此次交易的记录加入到trade-record-one, C# u- h. O; ?! X# X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ `) t! o0 q' z8 J! alet note (item 2 trade-record-current )
, M! q+ D0 @- w2 Y8 p! Q5 L; vset trade-record-current' t6 D$ F, S$ v" _
(replace-item 2 trade-record-current (item 3 trade-record-current))

- F2 M$ W  X5 S0 @2 u# Eset trade-record-current# E; q4 `* x* A  {/ e& h# M
(replace-item 3 trade-record-current note)  e& U: b2 {7 X  f

& W6 G+ y& H* c( K6 }; m: B
! Y# ?! W: r+ U, }
ask customer [
; u3 y6 s( E+ V% _& c4 Z( {update-local-reputation
. ^: s% {' [; E! j. B) d9 M; A! U( lset trade-record-current- o  Z3 Y* o* p7 @- n8 o: n8 ~6 y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 \1 c' Y: V! u4 _) J
]
8 o: _4 s1 [5 W
8 P: n# G7 o) p
  t/ W: T# @- j% n5 o: D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 k5 W4 o! _4 w, c

0 p7 ~! \$ @2 ?! G8 p1 T5 Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! m" l1 A! o: E! x9 W4 \;;
将此次交易的记录加入到customertrade-record-all
% J; i  I, }9 C2 \# P' Iend1 g5 B& s6 f/ \2 N
$ K; K+ n  e( v5 N" L% e/ v
to update-local-reputation
3 r8 d& D/ `2 F; Q- [! c7 _9 vset [trade-record-one-len] of myself length [trade-record-one] of myself
4 K- j% W3 q- |
, L* a; m( t  n) I
4 A% }8 ^' W/ P+ h% K* C0 o/ m;;if [trade-record-one-len] of myself > 3
2 d$ z! I- d( }& ?2 F: O
update-neighbor-total$ |2 |( y* I: o: p- p# P- p3 K3 U
;;
更新邻居节点的数目,在此进行
2 k; M  b) u6 ?let i 35 L7 R2 X: T2 _: ?* F1 ?: E0 `
let sum-time 0& g1 Q/ x9 G2 |! x
while[i < [trade-record-one-len] of myself]
; r7 l: _. P( o0 M6 c[
: k8 [  f5 F. Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 w2 c0 N$ c1 O* d
set i
7 }; Y) V/ u, @( i + 1)

7 n; m/ v4 f1 z, S) U]
/ [! H8 v& R8 Y7 h/ N. Vlet j 3
) ~" A6 K0 W3 \4 P6 B2 ?let sum-money 0$ f7 S; i2 w0 k/ K+ A6 P  L
while[j < [trade-record-one-len] of myself]/ @" c$ Y: N/ h) O" {. t
[" J9 V$ ^: [, v! ]5 H. a7 k& G
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)3 |7 u& e/ C% Q1 z) W. ~( B
set j6 o( V. t# o* U& b3 [8 G
( j + 1)
7 [7 a6 O' `5 o8 E! R
]% P9 m6 v, z; u$ q/ [$ S
let k 39 F; s6 h/ T8 J5 `. g/ z
let power 0
$ {- o( w" Q/ D9 t  Klet local 0
( a3 Y; P( |0 G% d9 @: [while [k <[trade-record-one-len] of myself]
( U" V) y* Y! m[% d  ^) Y% A0 V: L9 Q2 |
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) 0 [  i  m, x( w3 a' K
set k (k + 1)
# s" J2 O* h, l) H]
) G+ M3 N5 e* E* d. I9 `set [local-reputation] of myself (local)6 g8 C9 Q4 O" Z$ J
end
( \+ T! ?- O( e( Y
; t+ h" ^' f2 L4 S  r/ `( vto update-neighbor-total  [- a- l' B% x% i* {
. g# G4 O" c  }% K3 s9 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 S5 Q8 x4 X, o- M( Z2 O0 A
2 O" T' \* u" i: \

* s7 t& m% z; a- t( z( z, G' Uend# ~) s8 J, ^1 c! O8 \, r- m
+ ?; P( s- L( ?  M# n0 C( W
to update-credibility-ijl / W4 `" |% R+ Q8 V8 C. W

$ b& V& `; Y% O;;
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。2 M' S; Q: n7 l$ u$ d1 T  l
let l 0; T: U4 Y9 ~1 W: S
while[ l < people ]) k( R; g7 o! K8 @' }
;;
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
3 X4 }" d- T7 H1 L* j[
6 J7 [2 `3 @. p/ T6 @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 ]) Z0 ]# C$ \1 _3 t  e
if (trade-record-one-j-l-len > 3)
' a5 R3 o4 Q! @; S( }6 a2 t[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  y5 j# h; D0 f6 q, U# U
let i 3$ t: p! v  \' q! u
let sum-time 0
& X" `5 H2 K2 }while[i < trade-record-one-len]
8 Y: C' ^  N, a8 S[
  a5 I/ c8 c3 I% oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ L1 @/ C2 ~" t+ _" n9 y9 c
set i) C! Y( v1 o7 r& m) {; L( g7 M
( i + 1)

8 D7 ^: B$ b! ^7 ]- O. }6 {, Y]
, r+ b$ y# b: d4 Llet credibility-i-j-l 0  N! ]* L! E  C. l  g; C# j6 q
;;i
评价(jjl的评价)
9 K4 L% M) J( D; D: L0 Y( w# q/ G& Clet j 3
- e) `9 ~$ l$ }8 x" G5 ylet k 4
9 ^- V9 n. o  }4 _. q( ]while[j < trade-record-one-len]
  d  L. Q( C5 W6 p, `[
, D% U; ]& s  p) X: vwhile [((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" n4 ~9 k* x! s, K& h
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)
  Y, Q4 i; X6 F1 a5 O0 `" I5 Fset j
# x  B  ?; X# Q. V( j + 1)
! t1 ^" B' S* b; V9 d
]) I$ x' @* I# U. W- Z3 P7 S4 m+ J
set [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 ))9 Z6 i/ B3 H, L% h3 C) g  U0 ]

) _) t+ E& _" R( ]" ~' ~+ J, v

# R+ k9 F5 h2 G$ h" a( alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 `- O' r6 d" _) k7 C;;
及时更新il的评价质量的评价0 U" j, _5 ?5 w( U& A3 y' L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- o& f+ l, X  L
set l (l + 1)
/ k3 c; ?; b6 g* r' |6 f2 |5 z# U! t]
# W% K* o  E. Y6 @% S- ]end) N2 ~# U! s6 K  H

! G1 i" {2 K: B6 X9 g9 {7 y6 Z5 Dto update-credibility-list
% ?; ?. l% d9 p8 f9 u5 D+ Wlet i 07 s& @8 h2 T; r
while[i < people]2 ?% ^) D) X  n  _1 V; K! L
[
, ^2 Y- W, x7 f! E* M2 Qlet j 0% M+ {1 ~  P) }2 A, b
let note 0
4 V: N& t+ X/ _: Z( ?" F1 S) F/ h4 klet k 0
$ G  a% ^) ~9 e- V4 n9 d;;
计作出过评价的邻居节点的数目
8 x# |6 q2 m' ^7 m) h& Z2 O& ]1 n4 v* Twhile[j < people]
! w% A8 M1 H0 S+ f- e[
$ b, t/ H3 O- K+ {if (item j( [credibility] of turtle (i + 1)) != -1)
8 l) G# U5 ^+ U0 \;;
判断是否给本turtle的评价质量做出过评价的节点
, t( C  X: C* @, @% x; h[set note (note + item j ([credibility]of turtle (i + 1)))
# y  H3 N! @5 E7 N& g7 m;;*(exp (-(people - 2)))/(people - 2))]

* }$ e5 {, q/ t# }8 Xset k (k + 1)- `3 k- l* ]/ E0 t! T0 L  o
]
! {* U$ O; ?9 jset j (j + 1)9 i3 D9 e" w+ H
]. R; n2 s" a* G. i& D" U. s
set note (note *(exp (- (1 / k)))/ k)3 F$ k2 s& L6 V4 q( U
set credibility-list (replace-item i credibility-list note)1 m9 c. P6 q0 [* ^* M) ?3 e
set i (i + 1)* K4 Q% M3 {1 }$ y/ Y0 [: k
]4 _; F- o- B. z, Q4 H
end* {8 q4 \0 d% ]$ R

% y5 N' j, K5 A7 E. T/ ito update-global-reputation-list+ s6 r( a: v2 l" L5 r
let j 0
3 Q7 Z$ x8 i% twhile[j < people]# l. f5 c; q6 w) ^4 x: s# b8 o! b
[
/ @" P4 ~* d5 [/ I* ~, ylet new 0
- Y$ R4 S$ G5 Q3 Y( I. Q& y* U;;
暂存新的一个全局声誉
; I9 \7 Z" i" d- e; u; xlet i 0
' W) ?% [; A: P5 f  Jlet sum-money 05 R  d. {3 }6 _$ j# J8 l: J
let credibility-money 0! s) r8 M( z1 O8 t+ @1 U
while [i < people]% G: [+ _3 d7 g
[
6 e( ]8 w* r5 i6 `- N  Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). B  |4 R- B+ G) A9 N  B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ C% V4 S4 B/ M
set i (i + 1)
1 w' M' a6 s! U' D8 T]
' O1 Y3 n& l5 A' B2 `  \% Plet k 0
" r' d; J" R! L8 _let new1 03 n" p2 m- k, Y# f4 j
while [k < people]
1 G7 r6 m$ w7 B) ?4 K3 q, `  N, @" h[
% v+ c$ B8 \( }/ Lset 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)
3 f; a2 g6 {. O+ z+ X# ^set k (k + 1)! V/ m* V3 G: s$ t  r8 M
]
4 f" X: B, F$ Z9 h& ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - O  b$ w6 n, E6 J, C" m
set global-reputation-list (replace-item j global-reputation-list new)8 g- h& V" q! p" ^7 ]0 I
set j (j + 1)) \; _/ x0 D/ j, i9 a+ M- ?$ Z2 z
]% q2 X& p% N5 L
end
0 g/ _6 i$ [5 c8 P* B% K& w+ b( m: C/ J# H- p7 d0 x: W! o) R4 Q
; K4 Y) m9 L  \" R  K' c

1 w( G2 @* B: u+ _1 Jto get-color( f( l0 L: L: z7 L8 V

- }% |/ ~( K7 p5 h! `& dset color blue

) |! \; ^1 P' I0 K  n0 _5 r* k( \end
  n, w% c6 I0 I$ Y3 {+ ~2 n0 k
% Q, t; P+ ~  Mto poll-class
# X3 Q$ ]2 R! C& xend  l* k- W6 K/ r( J' {
+ M) H! m( q+ I3 N- c9 L" |
to setup-plot1. }' P8 M2 s' x1 l) Y
# ]* @. Y* Z7 t0 D% y! S
set-current-plot "Trends-of-Local-reputation"
6 }: B# h; u" l/ a; p& d5 ~3 o

& ~0 b+ R' E& ]" s0 ?5 E: j  Pset-plot-x-range 0 xmax

8 y" a. a# E& ^3 S# J' t. o
) j: ?* i! }0 ~: I! Kset-plot-y-range 0.0 ymax

4 S+ w) Q' Y& y" U8 Lend* F5 E+ f) \9 O4 `; K( Z( B4 W

* Y0 m3 v1 K, N) a" }: pto setup-plot2
" G2 |" O8 M$ `( w& z' Y% B' e, V' ~* j# o
set-current-plot "Trends-of-global-reputation"

' ?2 ~- N, Q) ?
7 F/ O1 q$ e' uset-plot-x-range 0 xmax

: F8 M$ Q4 p) L
! T3 R& i( J, L8 t, P$ |set-plot-y-range 0.0 ymax

' o2 P7 L! z: \end# }  V8 H! ]7 D; s
3 l  A: t$ h# F: X4 i! c0 W
to setup-plot3% N" q+ H$ q4 K& W2 h. \& n* i
- F, S7 ^+ H5 H  ?- v, h! I9 X
set-current-plot "Trends-of-credibility"
+ A( @$ z$ j) E/ p3 W( e

/ x  ^- s- }$ g' o* |7 Z' mset-plot-x-range 0 xmax

$ D% q. S' D5 y0 @
: X' E8 v: C$ b+ K' Oset-plot-y-range 0.0 ymax

9 h  H% Q# Z) R/ G$ Tend
8 ~+ r- X8 D! X5 O) b5 m& p! r
0 y1 [, B) H0 Uto do-plots' x' f, w$ W" Y
set-current-plot "Trends-of-Local-reputation"" I7 {4 c$ e( @4 A
set-current-plot-pen "Honest service"
1 r- l2 y. R3 O7 a' N: {5 [; uend
- ~* b0 M0 \5 ~7 X
% _0 Y9 n$ `) P9 j" p# ^! H' u' }[ 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.
# s* S, Z5 Y# k+ ^6 s: ~/ ]# I, `  [: J' m3 z
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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