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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:3 ^$ y6 a( K% F0 z! p
to do-business
- y( E. c+ u: ~7 X rt random 360
4 N& L, t! ?$ ~) i  @$ a8 D- D fd 12 T' i' z! L# G* u7 R4 W' T6 k' E' R) N
ifelse(other turtles-here != nobody)[
" l/ |+ ^: B* {, E0 u- u   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.; W( A5 G; Y" n2 b# o; |: L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / s1 Z* h* t$ H, M% z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! F$ |3 S% B* H' Z- ^
   set [trade-record-one-len] of self length [trade-record-one] of self" E9 D1 u7 L) g8 }+ y
   set trade-record-current( list (timer) (random money-upper-limit))! u$ G  ~, P5 I3 G9 {( D" y
) i. G) ^9 A1 D& @, E
问题的提示如下:, H0 C  `9 {/ m. l
6 E, ~" J7 D; ~4 ~) n
error while turtle 50 running OF in procedure DO-BUSINESS
/ A7 g0 _9 e* `2 [  called by procedure GO
7 Y8 [/ `( w( h7 z7 ]* kOF expected input to be a turtle agentset or turtle but got NOBODY instead.; c2 f. @8 y. |  F' L5 {! F$ Y, l: w
(halted running of go)
. d' u4 I/ r+ e. k% h# n
# F4 v$ C6 c3 ?+ Q2 }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~~
0 }5 v% [. {; c  b# L& L* C- 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' C5 _/ L2 j# }3 g
globals[' H* O4 M0 r7 w* w
xmax
5 d" [% S7 X5 W$ [/ E. K; mymax
7 {9 u  G3 X* w8 l% T0 Z' W1 Zglobal-reputation-list6 N( N9 q/ w& D

8 L% k9 N/ D! S4 W4 ~;;
每一个turtle的全局声誉都存在此LIST
, j& [9 i9 l) Y9 H2 q2 u( \9 ncredibility-list4 t" }4 f) E7 R' f. i
;;
每一个turtle的评价可信度4 N# L1 Q9 U" I, F1 P4 z
honest-service
( G# x: I& a/ Z1 ]5 n! Funhonest-service
) }. W/ M( ^- M$ j# u) yoscillation. U# z: ]: E  c( H5 J
rand-dynamic- k6 ?0 F  h* @* W# y! S
]
! U. _7 U# \& s/ U" _; X3 {7 C& Q: o- ~8 n
turtles-own[
) H$ \6 N+ @. Qtrade-record-all
9 g% p* `2 \( T. c: [" Z; w3 l;;a list of lists,
trade-record-one组成
: t* F% V; w' ?2 Z1 utrade-record-one2 }2 }, p9 D+ ~. Q1 Q& M
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, I" C9 n7 `- g2 x1 }0 O$ w' O9 g8 E5 V$ j) y: @9 ]9 M' V
;;[
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]]8 w1 Z, }: N2 I: N
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]0 g2 m8 q2 U5 a# ]: K# j7 }7 A
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* S+ E. Z6 z, S+ t- f/ K
neighbor-total+ U! u& A/ c! \; I5 g
;;
记录该turtle的邻居节点的数目5 j, K. y* H$ O3 M  d
trade-time
/ ?2 [5 o/ A8 G* `;;
当前发生交易的turtle的交易时间0 z0 x# ?- j. t( v( k7 x
appraise-give
& T5 D( E( ~* d1 \5 {/ L;;
当前发生交易时给出的评价
  N5 z3 n0 a$ o, C" G1 gappraise-receive+ _! M, ?! S/ [9 K, E
;;
当前发生交易时收到的评价* ^% B# S( k7 [1 n6 \& F7 v
appraise-time9 c% U. b* l6 k* K
;;
当前发生交易时的评价时间, v* F" z  A* ?9 j. z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 j$ G: ]9 b# Utrade-times-total' w. v4 Q9 |/ ]. {2 _9 h
;;
与当前turtle的交易总次数
) L2 M- F: Y9 _trade-money-total
3 w! b7 N% u. v; A8 g7 U! |; O) Z;;
与当前turtle的交易总金额
( \7 _9 U4 i# ^. w( o, y* tlocal-reputation
8 u8 @* r" C4 [7 ]  P8 D! P9 wglobal-reputation9 J0 L3 H5 J3 D0 C
credibility! P! \& h1 j, P/ }: B
;;
评价可信度,每次交易后都需要更新: ~6 u! x1 z1 a/ k
credibility-all, v' I2 l6 _1 v: k' c6 y
;;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  F  `# X0 s# t& N3 m

! ~- }3 k3 O+ U" D: h( D( O% I" v;;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
3 G0 _- C6 n) {9 ^+ n$ v/ Ecredibility-one$ m; Q5 R% C5 ]: |. ]8 Q1 \" X
;;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
" ?: q" J2 W' e' y; bglobal-proportion
, ^6 r6 k3 Z- G' B( `+ @+ [$ D/ D* ?customer
" s: b/ T  K7 t& Z, d/ C. ycustomer-no% ~2 Q( h1 S7 M. E4 {
trust-ok8 [  m+ d# [1 `5 s
trade-record-one-len;;trade-record-one的长度. L! h+ Q; H" |7 w
]) T2 F5 A' j. M, ~* R& b7 m

+ S0 [( N4 W4 o% O+ q7 l1 F) X8 [;;setup procedure
; }( D0 }4 X& p3 N  H" E. n( z  g
: W% U  `' U) J# e7 Z# o# u) Q. Wto setup# y) L6 _3 L+ |8 r& X( F

) f9 T+ a, T& T' J8 `/ H& G( uca
* [$ B" ]9 J. b* C4 V
; B  D1 c- _: d# ~$ }/ l' m
initialize-settings
- X+ z+ X' r( I
4 L/ t( Q# w3 A$ ^' T
crt people [setup-turtles]

8 p6 \& R! H2 L. |6 k5 I  _8 R0 O) Y" C: q
reset-timer
& `- V. b( n- _5 x
2 X3 i3 A2 u7 V6 n
poll-class

' ^# e' ^  f7 T0 W* G+ {; w
3 y6 \) P( {7 G( j0 j1 h) s! c7 zsetup-plots
% D) U5 A6 s9 u, y# L

1 M: E! M* y8 s4 x. f; l% b3 Ado-plots
& r; F1 U  ?) g4 x: e
end
) F7 |! v2 B7 v: r& l# Q" V% v) k, O+ I! [9 H) b
to initialize-settings
" k" C8 P' `' G8 P$ }7 o& i+ n# K1 W8 q  O" |2 k  F7 t
set global-reputation-list []
! ]7 {. ~+ ^$ v6 w

9 k0 L* O  b7 R* T# b! Wset credibility-list n-values people [0.5]

  Y& v! l: U( y# y/ F2 P7 Q' F7 F  }0 E- B. t1 r; Z( \* C# c
set honest-service 0
, {9 ?3 I' m+ s2 k- m

. k0 m# [2 l+ W# o$ s' ^+ I1 yset unhonest-service 0
; T2 X3 R" H  _' K2 M

( j; ?0 h0 M1 _set oscillation 0

6 m, \5 c3 R6 @8 B1 I; [6 Y; t# l
) _6 J1 ?3 t  X! R1 q* x5 Nset rand-dynamic 0
% m2 j  t3 e" x% O0 v7 [$ f
end3 n, J3 [; B. U

; o! ~. y9 \1 c. R3 |2 `% ^4 @: {6 t2 \to setup-turtles
+ w/ n5 }! y( tset shape "person"
4 A/ D' e, H/ y; R+ s) o1 lsetxy random-xcor random-ycor
) W1 f/ O: P* E9 ?3 cset trade-record-one []
: J5 P7 O  [+ R' g! a

4 n, ]* z8 Z  z0 A; m3 Lset trade-record-all n-values people [(list (? + 1) 0 0)] 6 M$ D- ~. `" j: ^
. p2 H7 H8 ~# E! t: {8 m3 c
set trade-record-current []
& t& f% G* m' h2 X$ {: z/ \! Eset credibility-receive []
! O7 U0 x8 G4 j$ fset local-reputation 0.5" l/ t- u2 C( j4 t  A/ s
set neighbor-total 0
, o1 [4 C: A/ B, ]0 Kset trade-times-total 0: P: y0 T0 x& a4 f& ?/ \
set trade-money-total 07 N# [2 z7 o/ `8 H2 \$ v* P
set customer nobody
+ K7 ^6 D' H  }" Z5 r, }set credibility-all n-values people [creat-credibility]
# w* Y8 Y) o, _1 Aset credibility n-values people [-1]
/ ^5 T* s7 j. f6 @get-color
7 w  ]3 i& b+ }. B

% l& s: @! ~; d0 Q$ wend' d/ Z  d+ y+ {9 h5 n

) s& V; ?5 I. u- m/ Y  Pto-report creat-credibility
6 l& T( `) c, i' c# L8 n2 Treport n-values people [0.5]8 s% P: [7 I, q- H: `
end) r! V) r: R+ `7 N2 J% D2 z, @

0 A, T# B! }9 O% bto setup-plots( N4 G7 F; ?" B7 j$ o/ Z" T

, q. N4 |/ f7 lset xmax 30

8 Z9 M* W% b. {# q$ N$ Q/ E- I7 z. z4 c
set ymax 1.0
7 [* r1 j/ y% c* _- H; L

. G* R. n$ s* e# S6 ^$ L! Kclear-all-plots
4 h' F* M# o8 x6 U8 l
5 ^9 M8 f( Q( M9 F
setup-plot1

" j0 }( c* T5 S  `" B; w  O9 Y  h* F% f. i" L2 Q" k
setup-plot2
2 U' H- a5 Q% s1 Q  z
3 S. O  j$ A) E  U' F
setup-plot3
. L0 C' z! _7 B# A
end
3 P# E  P6 Y  [. s* T
5 l8 E3 ]) U5 _: I- I( _9 n;;run time procedures0 F5 ~9 `9 [  E; h
# F5 ]: T1 G1 q3 K' ?7 p7 q* t* ^3 ?
to go# v/ w9 q7 c2 e# A0 |; R
! R1 ?2 }; v, g( H8 h
ask turtles [do-business]

+ j+ }" G9 o, j8 x; }( {; D+ Pend# X0 z5 Z( }& y+ _. w
5 G' B2 v3 R# o" J8 Y, u* V
to do-business 2 O. A7 R- y% x- h8 ?3 ]

  u3 E. A1 A' F  B* ]4 _7 B  w4 t( {( n( f% n5 [9 `
rt random 360
5 E; ?* h) Y8 _" l: W5 _2 T- p

* z' `  G* Z- a: c, Sfd 1

3 q9 c$ u! t4 {! V# y% h: w! C
, k, E) W2 x9 J) Z& Oifelse(other turtles-here != nobody)[
+ y& @/ U5 J5 i) l
6 o# Z0 o( l: U% X  f
set customer one-of other turtles-here

9 }5 }1 j2 Y& u6 q9 D  q4 v3 _; P
/ O# @7 J7 c, b$ H;; set [customer] of customer myself

/ m: E, t: ~( ?! j3 w: t7 h' H4 o
set [trade-record-one] of self item (([who] of customer) - 1)9 {* q( p1 `% j& J5 ^. t
[trade-record-all]of self( }: Q6 R. z  Z6 \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 l- Y9 v9 h0 `' X7 z4 B4 z
. ~  i& k* S( C% o3 kset [trade-record-one] of customer item (([who] of self) - 1)5 S$ E: G+ F+ R: `) O4 w1 G
[trade-record-all]of customer

, ]7 Y, A9 b% |  ?! \
* _5 n) O, B2 }set [trade-record-one-len] of self length [trade-record-one] of self

8 C! L; E9 B* F9 g, D( V$ M/ x! b3 X5 v6 n# x8 D
set trade-record-current( list (timer) (random money-upper-limit))
5 o3 x  x) F; s7 y( J4 |6 t, @5 z$ e

; T- w0 a, I! @- Lask self [do-trust]
: }7 W5 D1 d! H: T  s" M: F- |" n;;
先求ij的信任度
% y0 l) Z% E6 s" Y, C0 T/ B3 d# I3 v- S# u% z
if ([trust-ok] of self)+ Q3 `( }# J& e
;;
根据ij的信任度来决定是否与j进行交易[) z0 c5 \3 P- M: O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. ?3 w* ]$ q% z$ C# E  g3 k
/ j* K) `5 V% D* M, d- B[

  w1 R: o6 }! \" `3 M- j9 d8 _/ Q2 K3 t9 l8 t, N% K
do-trade

* e; l! F9 \& @( S) M
0 c8 P" ?* x; W, m  aupdate-credibility-ijl
6 v) V% Y6 N2 M" o  F

- J& k0 Y3 V& T( zupdate-credibility-list
" o8 Y. ~: J- Y/ R, @" j& a! @
$ R$ m; W( G! r4 x% F

  o$ u9 a; V- _) I- [update-global-reputation-list
7 h% i5 O3 }, \9 I7 e  W
% t& I$ S$ U6 n6 Y& [; E9 Q
poll-class
; f. b7 v9 B9 ?' U
  P- [" d$ J0 b
get-color
% F% s4 X* |( h* O

8 z8 q/ N4 `4 q, m]]& K+ u$ U6 t/ X, C6 [3 b# a1 J
  O% V5 I3 D, a6 T/ x! z4 n
;;
如果所得的信任度满足条件,则进行交易
$ D+ a( Y! o6 l" z9 X) T+ L$ b
) B6 p# s- I! }0 V0 L- g5 h' U[

' T& M; I( V( M* k6 w# a& Y/ A( `, a! W: L0 o! ]4 ?6 z
rt random 360

" S8 o0 D( D, U& O) W1 @
/ U7 S# I, H* t5 N- Ofd 1

/ B% D9 T. B+ X, p  t" j8 s# S' D' p0 q0 x3 H
]

4 I$ P' J+ u6 {( Z* M
3 p  A2 F& A. d( Y9 V9 Mend

1 R, P2 L6 ^2 d- i
" S! V  U  {# J  B+ n# zto do-trust / E7 |6 i5 ^' k& A2 }$ R+ j
set trust-ok False0 E4 K8 Q5 W5 u) `3 k9 e
/ B! P  O. X! Y/ H
8 J, I- @; \- B. X
let max-trade-times 02 z/ Z& w* D1 |3 a& Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 ?% M! y/ I! {, Y4 T+ K, S$ ^
let max-trade-money 03 Z$ I+ l9 j9 A- C( d# Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 e$ K3 ^1 m0 }2 y! I9 K" h7 Jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 j( f& A) P; i# R2 l; h; G. N
2 \7 ^- t! @$ X' ?* @
; D3 X4 E" {4 e; X: b
get-global-proportion8 E/ n$ C6 `6 G/ v8 Q7 p. C* P
let trust-value
* H, Z4 d! f. H+ L* }+ N& hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

! f' _; H5 S! z7 D5 i% Cif(trust-value > trade-trust-value)
8 z3 C& k! h) C( Y7 t[set trust-ok true]
% d6 B9 J5 S' c  S* s, Iend
1 u( }# Z) R; `  u2 T* j, D6 c! j' f6 g, g0 e' J% {
to get-global-proportion+ Q2 z" R$ k2 \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 P5 A; h! {1 z# p. ~/ H4 `
[set global-proportion 0]4 B7 E2 p) n8 j
[let i 0
( ^; S* N) j% v/ J0 q, ^# plet sum-money 0% E0 g' @3 l1 F; d8 n; X" C
while[ i < people]9 u5 o0 J1 a: ^7 a
[- L+ H) l3 b" a% {) T! {* I
if( length (item i; c' h: I6 T; K  r8 _
[trade-record-all] of customer) > 3 )
4 W* {0 X% D, h- U( O* o
[
) ?% @, t6 K: X# mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( `+ F2 E. V2 s# e+ f3 Z]7 `0 K" Z& ]1 [6 n9 T! K
]4 f1 `7 c( _$ _' h" `
let j 0
! p" W- i3 E4 k( |4 Hlet note 0
2 o" N- }8 M) Y% Z$ d) L) _% F5 Wwhile[ j < people]/ ^6 @  {' w. o+ E
[
2 p- k8 l, e! A, nif( length (item i# ]9 L) u# s2 q- u
[trade-record-all] of customer) > 3 )

8 k. ^( o8 s" p2 L; f: u[
- l# O% U4 o# g: n& s; \8 L1 iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ P1 `0 ]3 d# x1 D& I6 A- X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 h$ B7 {+ ~- o% q0 C% Z1 e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 d" Z$ }) I( K0 ?- A- ]6 k( `
]1 {  ?' {# x. r: z# D
]
- g; ~5 N* c) Xset global-proportion note1 n+ U! J0 R* q
]
  O5 }0 a( H, X& U( Wend
9 r: W# O4 B& [- i8 H8 c0 O$ I# g: I
to do-trade2 ^+ @. s# Z/ `3 i+ \% `
;;
这个过程实际上是给双方作出评价的过程. Z1 x. v0 w& n( e+ q5 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; s: Y+ u* c5 i0 Y: R# }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 Z2 w6 e8 E0 c( t/ [( B% N/ _
set trade-record-current lput(timer) trade-record-current/ l& a% x6 b* A* n
;;
评价时间
3 _, D! q" t/ f+ t. Pask myself [) Q7 o+ G& q' U& p" \+ t
update-local-reputation
, z% H9 e( [4 I2 K9 Dset trade-record-current lput([local-reputation] of myself) trade-record-current
9 F) }5 |# b6 y, r  Y]
% \+ ?; b0 J2 p. Z) h  @& l  dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, f5 T  C/ L% X& d8 g  S
;;
将此次交易的记录加入到trade-record-one
6 m6 ?7 F/ l' g, V- n9 Z% F1 cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 E: S+ ?3 c  ]! c, }* c" tlet note (item 2 trade-record-current )% N" Z6 S# w0 p; {, L
set trade-record-current
9 d0 b  O( D# |% d: s, ~8 R+ }(replace-item 2 trade-record-current (item 3 trade-record-current))

. \+ u: F7 Z) c$ jset trade-record-current. i: Y  T# g4 d, m. Y+ e
(replace-item 3 trade-record-current note)
# i( ?" w/ x: L5 M
; l: T0 \8 F# z  W' ^! }3 P' U/ o

+ T# R1 i7 J; k5 `! V' Gask customer [
- Q. T: |/ F% U4 Y! }- s" Fupdate-local-reputation% R- p% H& w+ ^3 J! d' h3 x1 K
set trade-record-current& O- B7 E/ n, Z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# K) ^8 E: G( S) m; F
]
; X- R  P& X( }4 l
8 p, v: v- e7 X  {

( [, s" N9 s! m6 f: Z" q+ sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 h1 A9 t/ `5 t% H( S. C; X8 m

+ N1 @! E  |1 r9 K! [( s7 _set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 {3 J# {( K; s  F3 I6 U* C! h* t
;;
将此次交易的记录加入到customertrade-record-all
$ Z$ Y, N7 E0 m$ p% ?5 y. zend- \, `2 \# L* b/ C8 D
5 E" D0 d* i7 t: s5 Q  Y
to update-local-reputation, l0 F( L5 m3 o
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ k* F& k& X% @
3 A! O5 z; D% p0 p+ D- O5 k% S
;;if [trade-record-one-len] of myself > 3

7 D1 {& D# T" z6 _0 k8 T' ?update-neighbor-total* ^: v' {* r9 y7 a2 }
;;
更新邻居节点的数目,在此进行
% D* R0 e$ @$ I5 e. y& C. }% U% Ilet i 3
+ G) `/ q+ D5 d' a$ _$ ?% nlet sum-time 0
" p, W2 I3 b$ z) k' R* zwhile[i < [trade-record-one-len] of myself]
% B7 r7 z, }- ~) c2 _" V% d[
4 {0 V1 B( \- D+ {' g% o) v  [8 sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) g7 Z8 ^3 T& ?8 |
set i1 f" R  p' ?, T! e
( i + 1)

/ |. ^# v% X- M0 e% A]
! `  ~: P# ^: {1 nlet j 3
. G2 A! S/ G; B* X% l. K/ Nlet sum-money 0- q$ x2 j! g# z/ x( {' |' e: V
while[j < [trade-record-one-len] of myself]
/ d3 E/ T2 `1 S9 {: e2 d; Y[; i5 W" d0 E- L
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)
+ q/ W0 z/ Q* v% T9 Q: nset j2 P; J- H3 s. ^5 F
( j + 1)

( q/ ~. Q3 D; i7 \]( n0 N) O& Q$ l+ R! b
let k 3
$ r/ K. g3 W* ^- h- w& e* {' k4 Zlet power 08 N$ n7 n7 m/ }
let local 0
2 [( M6 x( S( Iwhile [k <[trade-record-one-len] of myself]/ d7 ?! ~6 J5 p
[3 R- V# w3 I1 ~- n
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) 9 f# b6 X2 p8 D! c$ J
set k (k + 1): M" u$ g1 V  g2 o
]* M# g2 v& `$ G& P) Y) D; j
set [local-reputation] of myself (local)
+ v) Q" s& X! p! `; r1 W' H4 _8 wend
+ o/ V8 R  D3 p1 x
9 C5 Y0 _. n- K5 q  Ato update-neighbor-total6 ~3 A- S2 f4 |0 p4 _1 C

+ H* o) O7 [: R1 Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 F) m6 j/ I( s  |6 s. l6 Q0 r' ]9 n
8 K! ^+ `" M( B8 s1 t% l$ A$ j

! ], R4 N9 [$ E3 pend
6 Y3 n2 T1 C: i' M; V" L; _4 f7 s0 X3 r8 Q% X
to update-credibility-ijl
, T, F# H% i4 U
  _+ G- _" `5 Q( K- m' b, o9 k* t;;
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。
; Y  O2 _: s- c* N) rlet l 0
  x5 C, w" R) l# X. h: l  uwhile[ l < people ]
( G! B, v6 i# e5 N" A3 h;;
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* j' X" e" c' N6 L! x+ e' l) j
[' N% P: h, B2 J2 \
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 {; w' y6 a0 h" H5 O8 n& a6 v
if (trade-record-one-j-l-len > 3)- Y8 R  r* M( x7 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
6 w% h% l- B& A2 zlet i 3
2 Q* ~8 w! u+ Q9 c3 dlet sum-time 08 l  M4 g) T% R1 U2 }
while[i < trade-record-one-len]
( G7 x6 x; Q8 r' Q; ~* J. E[6 R7 }- z' ?  g0 T0 v. l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 T' R, i- D& o; Z/ ]
set i: g* ]/ ~0 `9 A& M3 e
( i + 1)
/ N: Q, z6 y" F# Z* E4 w
]; G+ f. W: Y9 a- p8 E- S
let credibility-i-j-l 0
4 u. `* \( ~1 ~( b;;i
评价(jjl的评价)8 \2 q1 i( i$ O/ x" B5 Y- Q
let j 35 t* @1 ^0 c' \( D5 [7 R
let k 4: l2 q7 E5 N& X) i# {
while[j < trade-record-one-len]* F* A0 K  S7 d+ F
[' v  A0 A  E  V: K) ~+ T
while [((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4 E1 N9 ?2 R3 l
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)# G! @! Z1 G5 _( E) x
set j1 Q! ]. ~2 ^$ k$ U: v) H
( j + 1)
4 F0 t1 ~* M  x. X
]* c  _  ?7 z" ^
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 )), T* U2 w; S1 O  e% z% G9 C. h, A

0 c. v& g" V; x' t' H7 `( x/ }, l
" p2 j, F& v+ x1 ]. m) Y% w5 j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" U( O' a7 c5 M
;;
及时更新il的评价质量的评价7 s, Z% P: I0 v1 R' `+ \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 }2 Q/ F$ E% J  _; {0 {1 ?
set l (l + 1)
+ ?9 z- K/ @* e5 k]. {5 S8 |& ~, a( }$ n
end
- x5 s* m& {' c5 l& Y2 }1 H7 m% W
* E9 p, P* F$ I2 v0 R& ato update-credibility-list! L+ K, O+ ], Z5 o* X3 ]% [, B2 Z. Y
let i 05 t5 ]6 J' T- H/ d7 [& `
while[i < people]& g3 y- r% R" o+ A$ n8 D
[
0 ~" r1 e0 Y" ?let j 0# z* S* ~8 I7 `" H+ i/ q
let note 0# z9 C7 V/ Z/ d" i. B" ?3 E
let k 00 e" k$ A, D% j/ N! B
;;
计作出过评价的邻居节点的数目
; S" w0 z) ]4 t6 owhile[j < people]! o0 y5 |) Q% x
[. f. E2 F6 ]0 g9 k% \5 W
if (item j( [credibility] of turtle (i + 1)) != -1); [) U! o8 ?. J4 M1 @- I. Q
;;
判断是否给本turtle的评价质量做出过评价的节点
/ N" U) k) K5 l$ q: Y[set note (note + item j ([credibility]of turtle (i + 1)))
, \6 L! c( j, ?2 M;;*(exp (-(people - 2)))/(people - 2))]
4 u' z; s2 i4 k# m/ u
set k (k + 1)
( U% A( i! B: C]$ ?% p( ?" T# A. Z( M
set j (j + 1)
! f& q4 T6 J8 n6 X]! m8 l5 o+ l* H
set note (note *(exp (- (1 / k)))/ k)1 S; H/ R6 M6 j+ |
set credibility-list (replace-item i credibility-list note)! E6 u4 e, ?: x
set i (i + 1)
7 @1 r0 v) D0 x2 d8 f3 V]
6 J' t3 R( `3 x: ^( Uend9 n( ?2 b+ \. b0 s

  [7 g& S) I! ?+ V* Eto update-global-reputation-list8 E9 S1 j: N* i( R5 N
let j 07 c6 z7 x  `9 s/ h' W; U- O6 s
while[j < people]4 C" [! \* l2 g( E1 Z; q9 i; l; \+ Q
[
5 f; V( x+ ?' H0 g; L! U9 klet new 0
0 o: K  \. b1 S9 ^9 I6 Y;;
暂存新的一个全局声誉
0 v5 y+ V- u; v, v, blet i 0
9 J: {, h0 V7 ]' n4 O* nlet sum-money 0
; }; i8 P% A5 y7 s2 z2 `) ?8 ~let credibility-money 0- q* d1 p/ g# t) |5 }$ `
while [i < people]1 X  x& F5 Z' j+ E7 I( ]1 W! w. V
[
7 P$ h7 l3 o0 a( J# ]: Z4 Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 H  s/ A1 d) F3 b' G2 M& p+ \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" p  ]( Q/ j- R. R  U5 I6 d- U. @" Z2 e
set i (i + 1)
4 }  L& g  o7 H6 g7 d# M" F4 p]
+ U/ d/ f9 O7 tlet k 0
$ S, T3 G: ?5 i. l) o8 b7 tlet new1 0
" O1 M+ s: H' R/ nwhile [k < people]0 g7 c2 C* A& y+ K7 i+ _, T
[9 \9 H5 ^$ H! X
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)
3 {' J1 k3 m) {* i6 G1 q- Nset k (k + 1)
9 ]# P5 V6 X' N. G4 b5 ^0 g9 E) O]
+ O1 u, Z8 H/ o" H6 fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 {7 k  o! a& g) k9 k6 \. V
set global-reputation-list (replace-item j global-reputation-list new)
# C. _" c1 a5 _: Hset j (j + 1)- r  l  x% ]1 T0 E! p
]1 Q5 a2 K2 s$ n/ w' P3 v3 Z
end
! }8 w9 A# m% g) k- k) C
( [8 z) G1 R8 r& O  @! T! E/ E7 b/ k- S- P0 K& C+ T2 r7 |
5 m) @1 R& F* t5 t
to get-color- L! |8 X5 k# ^% w! J" C
. \3 m6 ^) ]# }8 Z
set color blue

$ t2 T( a8 k1 Eend: n/ s0 n, u( g

8 Y. ~( d$ z5 hto poll-class* B1 [" F) i9 g" b! _
end
$ g0 S  ]' z9 a1 s; {& x7 L, a: {" u9 V- d$ {, |6 Y" N9 C2 a4 b7 p; X/ a
to setup-plot1
2 V! K1 a  X" a8 y' N) A
+ j  n1 T5 o- V- oset-current-plot "Trends-of-Local-reputation"

: A( Z- S: ?; y; w
- B' @+ a2 e4 vset-plot-x-range 0 xmax
# ?4 C8 g7 Z2 R$ C' L0 e- B; `

- @5 \# F% r9 dset-plot-y-range 0.0 ymax

4 h- M$ e/ t& Z6 N" C6 Yend. o- W0 i" b9 {8 G! y
4 K- Q* H1 ]- @5 j+ |+ B+ U0 X
to setup-plot2
8 g" R5 v: G$ a$ w3 e  t$ m* E1 Y
, p4 W1 Y- x; `) W9 Zset-current-plot "Trends-of-global-reputation"
8 d( Z/ {: Z1 p8 G: a

; }* k- X+ {& E' a6 Lset-plot-x-range 0 xmax

2 I3 X. n- D: J# t# b9 f& C+ Y4 ~. X0 E+ F, v5 J$ {
set-plot-y-range 0.0 ymax
: K8 ], A, H% b2 E& q6 X% T7 F
end
5 I+ j2 c' x- {7 I+ U! l! C+ m. L9 U, r; w+ ~- L2 H& W
to setup-plot3
, |  d, M  V9 j. `8 Q, I+ b* i1 c
set-current-plot "Trends-of-credibility"

/ C& W" g% K$ n( |$ h. C; Z3 T, j# n4 {8 G
set-plot-x-range 0 xmax
" v2 }7 {3 i9 \9 y  N

, G! O6 b( \; c* [$ D% Z  R# c- K7 fset-plot-y-range 0.0 ymax

2 O4 U8 f3 D' X4 t/ y; |/ ]* e$ R3 ]end) J; K& u4 g5 n2 d

, a" ]! H1 f# }3 V0 Z: W3 xto do-plots
( V1 g- u8 Z+ e5 ?5 l2 ^set-current-plot "Trends-of-Local-reputation"
; w6 l; U( A# n7 v( o: Zset-current-plot-pen "Honest service"6 W1 n5 ^; q% d, G2 I
end# K0 k& L4 }( _0 i! ?

2 B5 S& L, V$ f- A[ 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.
9 s; N: K" Z8 N; N1 x7 Z7 K, x3 X8 {4 K8 n! l! r& {$ d
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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