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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:1 W* G0 V# [! `& X
to do-business & Z0 t/ W' K4 w$ X  {
rt random 3600 A9 g& B- P, O
fd 1
& `& r" \9 ]% R1 v( N ifelse(other turtles-here != nobody)[
, J* d" {! f1 B   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.
- a7 m' i7 K! R0 b! A! O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. Z0 J4 h) o- k, U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! u& Q$ n# f* m7 M' p/ x5 a
   set [trade-record-one-len] of self length [trade-record-one] of self
  w! H! L3 l6 c5 X) T1 Y4 ]   set trade-record-current( list (timer) (random money-upper-limit))
% @/ I7 e' W* I! G" m5 j# P4 c4 v/ |$ W2 j" A! D5 _/ V- t# s* P
问题的提示如下:
; j% V8 z/ {" d- x/ U
2 ^5 A$ {: T6 O' R/ |error while turtle 50 running OF in procedure DO-BUSINESS7 Y$ I6 d. |  u( {6 d$ Z! v
  called by procedure GO! `+ j" d4 s9 x2 _* z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* L1 u! ~: |# }: ?5 W
(halted running of go)7 f; b4 A6 l3 `6 y
6 G- S: s2 M; i0 {# ]* 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~~+ J. T: t: K* X" f" \! H6 D# s
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
" r3 k0 c4 K* Q4 [) i  p: Vglobals[
  g+ p" c: Y( _/ W8 j$ Txmax
+ d$ s5 }5 d) Q. C/ f; nymax
+ ?8 b- y# d! p) Q/ l( h5 Fglobal-reputation-list$ @* N; R' c) ~1 [7 J0 _
# e/ M, [/ z7 Y: I1 y! w
;;
每一个turtle的全局声誉都存在此LIST+ ~5 C6 \& c0 |. @5 v
credibility-list% F/ d* \7 x% |! f% B
;;
每一个turtle的评价可信度( C/ _. F+ J4 N
honest-service
. X4 ]; s% u. x6 Y. `unhonest-service
, q) V0 O* A( k& poscillation, ~8 b6 f! {6 B) U
rand-dynamic
) k2 D  m7 Y( u) ~]' i: e5 w6 |3 p6 l4 c( x7 ?

( s" u8 d3 b7 o% R4 kturtles-own[' I7 ?" `* ^- `8 q  {, W5 J
trade-record-all$ v6 {3 l# v- D+ C. s5 h4 q9 H
;;a list of lists,
trade-record-one组成
+ T! k, L, R5 etrade-record-one
+ |+ M( H+ @0 T1 \) U! N) X;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( T3 _8 k2 F1 T
- w1 l7 U+ s( H0 O;;[
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]]
- a8 P0 Y3 X  Atrade-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]
$ w8 z( w, h* m3 W! J5 B0 ^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
  z+ D1 i2 a( uneighbor-total
6 b7 Z4 q4 L, Z8 E( v; K1 @;;
记录该turtle的邻居节点的数目
) t$ d9 U7 a- q7 ctrade-time
0 h, L3 R* l; R8 [" u;;
当前发生交易的turtle的交易时间
( D1 ^$ o& S  I4 Xappraise-give' q4 C# a) K, Q( h
;;
当前发生交易时给出的评价
" R& q  h; I$ \. ?' bappraise-receive
, z  r3 k* _8 i$ I/ r;;
当前发生交易时收到的评价3 N2 H5 N& M7 B# M/ M% p% i
appraise-time; I. C' }5 N% z
;;
当前发生交易时的评价时间
$ m" b$ R8 X" L1 o2 c* E1 ^; q4 [2 jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ f- M; }3 M- N5 C4 ]7 B) Ntrade-times-total
5 c; X( a; }2 [6 M+ C! {# z/ J;;
与当前turtle的交易总次数
2 [& ]& K7 e# `# X! O' ntrade-money-total0 d: V0 g/ W& Q' z
;;
与当前turtle的交易总金额$ q% W+ U6 w3 s3 J) X7 j" [, A
local-reputation
1 b( l9 v5 l+ Z$ s7 iglobal-reputation( \9 [* d' y$ \  a
credibility
6 @. v4 V: y# `! [* h6 Y: n$ S;;
评价可信度,每次交易后都需要更新
$ \% T  v  G) X0 \3 |9 Jcredibility-all
" y- D( B! M3 I3 n;;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
  e5 [1 t0 k6 i" ]" @: o( S  N% Y0 v" |0 L( Z
;;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* ?/ Y9 q. y/ C* H$ w. a- w
credibility-one
( N: z9 V  }& u. T7 S;;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) C% O' e/ v4 T* j, F' d: \
global-proportion
1 j; z5 w3 g. d" qcustomer
# |  Z$ S0 V* T# ~% @0 D- Qcustomer-no
. Q, s- R) I% l* v- h$ U( p# ttrust-ok( G$ s+ L+ S# Q6 |$ l% r& v! E! h; W( W
trade-record-one-len;;trade-record-one的长度
1 W, W/ T; L9 R]
% W/ w  G8 `4 D' O5 W2 F" b4 ]) I! A( C& a
;;setup procedure& A3 \  Q8 l2 T

; {/ ]  r& Z, _% \' d. D& uto setup- Y+ N, W7 q" E0 ^' |$ r( e0 |

: o3 u6 a! U5 X- a' fca

4 `$ ]8 j) p9 d0 O
) w9 w" h5 k6 C8 tinitialize-settings
! l* h/ M- j# U  E1 C

7 h6 {" S$ K3 |: Q& R7 G2 B% X* icrt people [setup-turtles]
. v) ]# R$ E: O: F. T6 z

7 c7 `. ?& b7 I$ d+ }6 F) j9 [reset-timer
( c1 K# U  F0 ]7 \

6 @: V# L- G. g4 w" a; @poll-class

6 f% a+ H/ i$ l5 }& D" N+ N
4 B+ ?) A+ r7 W' @6 Usetup-plots

. Z0 T) G/ U+ W$ F1 y- F' p
8 G; w4 ^* Z% B# cdo-plots
* @: V* T9 Z' n( H7 ?
end
# e6 J3 X: x* j6 Y6 b4 I* ^8 K0 j  a4 |  ]! d+ V
to initialize-settings$ J' X% t; B4 k
2 R' z9 g7 K& I% s0 \
set global-reputation-list []

! {1 A+ W' ~. d2 T' s1 r+ y8 I2 s+ l- x/ U; i$ e0 u! F) [
set credibility-list n-values people [0.5]

3 i' a8 y* j" }0 i) B9 F: U1 x
, k* ^8 b/ P+ k/ Zset honest-service 0

( \& d  }3 l0 t: k) Z0 c) J) x, i% ~/ v' E
set unhonest-service 0
6 n8 b5 d# @- v7 \' ~5 X: v6 V
. [1 p# }: {; [# c5 j4 c' n
set oscillation 0
( m9 T9 ]7 x4 k8 I( n: B" u
1 S, |0 D; m* d. ?% }  R7 E1 S
set rand-dynamic 0

% @7 [$ T& _+ t' I+ |end
1 k  N0 y! W# Q/ `7 m
! J) k$ |$ D/ c8 h- sto setup-turtles
$ t) R) j# N! a3 K- C  m. Z9 V5 eset shape "person"- S4 u$ ~  w$ Q; B3 S: R
setxy random-xcor random-ycor
$ O/ n4 ]% V! d" Uset trade-record-one []
4 b2 ]0 P7 w# _, @$ k

- E2 D( l- l( L; Z) Xset trade-record-all n-values people [(list (? + 1) 0 0)]
! f+ \/ p& ]0 ~0 c$ x5 R2 b' V) l

* @2 ^+ [  @& R1 U" eset trade-record-current []% Z, U2 _" [# c3 `1 g* i
set credibility-receive []
2 n7 N9 l- d: w3 ^2 `set local-reputation 0.5+ W: D. g- U9 C; j; Q
set neighbor-total 0# Y& q9 v# X# z. M2 S* p
set trade-times-total 0
" i- ]  `0 b) _( d5 Y$ eset trade-money-total 0
( T, ^9 V( a* M- s  vset customer nobody, k$ K) O$ E; {0 r) _0 o
set credibility-all n-values people [creat-credibility]
( x. u% P! U( ?set credibility n-values people [-1]5 P8 [( J: |: C! F
get-color
0 f, P: D% {1 k( ~
& t" Z- U; _& ~' D0 ]. a1 T
end
3 j) }6 D$ p$ x6 n" z3 p4 G$ w" w9 E
to-report creat-credibility" U3 ^& T* S  n" X3 R/ W
report n-values people [0.5]: b& d# H" [) V) g
end7 w0 S6 M6 S! Y+ C

4 o/ p$ G7 S) ^# A% Y9 [to setup-plots# o4 m) ]. O7 I7 B6 ~6 s
# g  N, d3 X  h1 l
set xmax 30

& [/ R7 c9 j0 k0 [6 ~
. c, n* \/ z4 P  N  v& vset ymax 1.0
' z) C/ c3 l+ c- y3 l9 f# b

( j' U$ m+ Y! H7 }) Gclear-all-plots

  t0 H  |8 j& j% g  o$ L( p5 M1 P8 W& ^& u: I
setup-plot1

' V* C! n: a( }4 [3 n1 z& l' f, r. r! x0 l% S/ c' [4 D! t
setup-plot2

! I! |& D. w1 @  U: r
/ o4 v5 @, j+ B7 p9 b1 ]setup-plot3

# \. U% x  G9 \! c, H0 s" Bend
# [% y! v- b+ l' h7 S9 p) F; V+ L5 `# t8 P$ |$ c2 w) Z2 \3 Q
;;run time procedures
! R3 I1 r7 {. F- l- P- A5 d
1 c7 _; l0 I+ h- v" rto go) Q! j( M- v  I
$ C6 D) t' B  c) J
ask turtles [do-business]
, h4 i8 |* X8 \; @( O% b" q7 R
end1 F6 ?8 }! }) z) p) c) t5 u- ?
8 |/ A5 |2 ?, y8 y; g- c' S
to do-business
$ j7 L2 q: ]4 t8 s8 K( T! R# \
3 D8 h8 G: H, |- m' U# g! H
2 z; z' l' y' D% b: f7 G3 n/ A
rt random 360
/ G6 s6 Y8 R3 l7 _- A

" }: @. m* }% B9 L! j! Gfd 1

$ E" t8 A: x; j6 Y
6 _& d; \( w( |: Y6 D3 @  yifelse(other turtles-here != nobody)[
! X3 g4 u, E/ m6 u

$ ?0 M7 |. @2 L1 f8 vset customer one-of other turtles-here
# D7 T% Q- z! B: _
3 i$ X# e- h4 k7 I$ m' M# F
;; set [customer] of customer myself

( l2 }, h; ~* |
% m6 {9 Z' V# e6 vset [trade-record-one] of self item (([who] of customer) - 1)
6 Q0 I* X: a3 o& X2 B8 s' r- \& i[trade-record-all]of self
  \' P( T- I: W6 k7 F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 a1 Q. T9 g$ @+ ?2 T4 |' l  z' |8 X( O* N# A7 M& O) n
set [trade-record-one] of customer item (([who] of self) - 1); c; f( J2 q" i  o9 d
[trade-record-all]of customer
0 l$ u; c: t+ h: E6 L* @5 U

3 K  s! r& k5 |$ ]set [trade-record-one-len] of self length [trade-record-one] of self

8 v. V- n, t9 O3 b% b
; \% v9 A; h) b* V+ d6 F; Sset trade-record-current( list (timer) (random money-upper-limit))

7 m+ a( x9 K+ K# J# W1 f  s" K9 S+ Q4 n
ask self [do-trust]" j. D" P5 t2 _
;;
先求ij的信任度
2 z" H& |" P+ M5 M# }: ]9 Z4 n6 T1 |4 z* u% O# u
if ([trust-ok] of self)6 L2 H1 @) E# T# F2 r
;;
根据ij的信任度来决定是否与j进行交易[8 G1 I& Q+ J, P  C) X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- f7 x# N, m, u  F+ l( @. u8 }5 v% ?
[

  o  R+ ?' c1 r# N, a1 o; i* {
' q3 U# c0 L5 |7 u# ]2 d( @- ydo-trade
- @7 t6 Q( M  U

$ k& G; K) A' N5 N6 ]7 a# O$ ^update-credibility-ijl
3 n9 `  m; F2 h- l3 c9 }

5 `  h5 p  e+ z& Q  x1 uupdate-credibility-list1 T4 S  `9 w: [) e
: N( Q, W0 j4 J  B' t" F8 ~

; A. F8 ^9 o9 i& j5 V' h1 ?update-global-reputation-list

$ [, s0 D0 p) R6 u. U% _. v" f! P3 ]9 K( M
poll-class
( N4 c: E! z; V- c0 r, c% c2 j: Y! C
  F+ O% l- ]; r" c- p2 j! Q' @
get-color

7 u1 V1 c. x# A5 K+ A7 R% W8 p/ P) e9 s% I
]]
9 j) I$ i% w8 w+ F4 s
8 y4 L4 o# H: M. d, K;;
如果所得的信任度满足条件,则进行交易
+ S3 k' Z! v. [, y( I* }3 Q- W: p4 |3 b
[
& O2 J# R& r0 K$ S

( ?: A. p2 J# K, Xrt random 360
5 V6 l: k, y/ X, W7 k
+ @/ C) ^% q: s: ?! R4 A4 p) s
fd 1
3 s. U: i6 I2 a. g  i
4 ]$ f1 m+ W, b) x
]
$ Q" |6 Z$ e' w+ L- B' e
, I, z; R  U2 Z: r
end

! }0 {- f" n8 S! Q6 `3 y+ ~2 k
, A& G" c) s3 m% }; F" x9 u5 X" U+ Kto do-trust
4 {8 L8 T. @5 i( E  z6 L7 Vset trust-ok False
$ K! o2 h" |) X5 b% @! ]% U7 ^
/ b* v' k/ M6 ~# j" J+ f6 v
+ n# E+ U7 x- y2 v* P- r
let max-trade-times 0
; l0 z5 m: ]2 k( r7 N' |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! O  e* k) b3 o6 _* M3 V2 T
let max-trade-money 0
, Z$ q, s0 E8 W1 k3 c( d& Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ ]- H/ ?$ L. E1 F; \& o) rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 {' y( Z8 H9 I0 N3 @: k
  r: J  A7 ?9 T2 U

# Q7 T8 h% J1 Gget-global-proportion+ T! K+ f1 W2 Q- {  ~
let trust-value
: t0 ^! p9 p; t' Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# A" X9 e# A# C8 f! e  jif(trust-value > trade-trust-value)2 c# Q" o! H, O0 T4 c( g1 o* A
[set trust-ok true]; d, W. M  l5 B  c8 n9 ]4 }
end
8 R& i7 _/ q7 X# d  @  G& A$ A
" n' z9 H% V% m7 e$ Sto get-global-proportion% m* X4 e/ ?' t. F5 n2 f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% F8 Q7 C3 ]3 t0 \5 e8 K
[set global-proportion 0]
2 s" V5 @+ Y% e" f[let i 07 S; i. k3 ]2 ]  r# d5 g
let sum-money 04 _  P6 N0 T3 b' Q" V4 Q
while[ i < people]- Q0 ^; L. }5 X% ]) N4 K
[$ V( b( r8 T) ~
if( length (item i$ l9 `  d. S% m0 K% k; V
[trade-record-all] of customer) > 3 )

& D4 X* m* x# i% U6 r/ O2 V[( Y: g7 R; ?* e, }
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 N( w% E) \6 V5 y- e* c
]
/ F. A+ N' E# r2 P]
0 O1 p+ v1 t4 m: ]6 ?let j 0' s5 E' {; [# x5 [# A  U
let note 0: K- n- m* }( `+ t
while[ j < people], Y( h+ B' t' w
[7 o6 J& h3 F$ L# q& q/ l" j
if( length (item i
" s( h6 u- Z3 M! L& H[trade-record-all] of customer) > 3 )
9 k5 j# c* ^& `$ O3 g2 r5 d/ x
[# d2 H$ m& g. J* a) O" ~9 j, D9 Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 `' t. Y: T6 K7 n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& m, P# \! I: P" \1 D) T; R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( _  [" B  U9 n
]7 e: t5 ~6 ^7 e
]3 r" `1 U8 G! H: g
set global-proportion note" c: l" A0 b4 t, o9 G7 S
]# u! N: @+ Y. g- Y1 `1 w  P, |
end
$ C- z) v; U4 x/ Z9 S( G1 H7 W1 Y( A
to do-trade, O0 B& F6 M  [# V% a$ i; k
;;
这个过程实际上是给双方作出评价的过程; E+ T$ Y) {: s4 P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  j4 h: \2 d8 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( R% v2 r8 {5 [$ m, a2 `
set trade-record-current lput(timer) trade-record-current3 q/ |6 R0 Q; @3 w+ u* X3 h' J
;;
评价时间9 J0 C. ]9 B" p3 p- p5 I+ u
ask myself [
% T- U; m* e: q( P4 j. ]0 tupdate-local-reputation
& Q$ P8 C0 Z5 O8 y3 c! Oset trade-record-current lput([local-reputation] of myself) trade-record-current' A) N7 W: c% H1 Q
]2 W) J$ t5 B& k/ h6 p$ s+ e) e5 N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) o* k; s% _+ R+ F
;;
将此次交易的记录加入到trade-record-one
+ d; ]6 l' X; v1 J# |! ]& Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 K) p7 b' G4 V- x) c& flet note (item 2 trade-record-current )  k, w9 P  V! e& I! J
set trade-record-current1 T8 d( n( c& |$ [
(replace-item 2 trade-record-current (item 3 trade-record-current))

: Y2 S- b. p7 C* ~, }! zset trade-record-current
  E8 s. M/ L! q7 ^7 ^(replace-item 3 trade-record-current note): q7 W, X- S7 O- v# C
7 v2 F6 y2 H5 _3 v/ f# y+ e  n
  g8 h/ a) ?5 b$ Q& \4 y' o6 c' ^
ask customer [
& B  j; U" v0 o. ~update-local-reputation" a- l! J. k  p7 v2 A' \# ^
set trade-record-current
0 @% ]6 q* b! Y  |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 [+ ~% x1 d+ G" w
]" _# Y3 d( q1 i0 k( ?+ _/ h

% X2 U! }4 R0 m/ b1 s# B$ j# L

+ s$ L0 e. ]3 R! Y. C1 Y5 I2 J+ Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" H( @" f3 c/ }2 h7 }/ i

  e1 A! [4 \" b3 k! Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 A: g4 @6 ~* g, o, F8 F; t/ w5 b;;
将此次交易的记录加入到customertrade-record-all
; R& B! z+ M1 Z  J# \, |, ^end" Z  ]- H- t, t, I/ H
- U5 T8 ^! {% Q8 d! D0 w
to update-local-reputation
  T8 k% u5 K  f1 A9 H6 x' t& @9 cset [trade-record-one-len] of myself length [trade-record-one] of myself
/ B7 {5 V9 |: F+ ?0 a& u7 ]
: d3 K& Z, a& y. P2 k( a
  \- v2 B4 @8 ^* f; p9 D0 y) l;;if [trade-record-one-len] of myself > 3
! J- r" f$ W6 s& U/ n1 [
update-neighbor-total
3 @5 B1 q+ {3 d;;
更新邻居节点的数目,在此进行0 ?  W# y- F2 K# ?% L) u7 O
let i 3; D$ x( {. K( t/ O0 v3 y* _
let sum-time 0
, x6 `5 o2 I& d. D' nwhile[i < [trade-record-one-len] of myself]. ]/ F$ K; Y4 V& t1 c6 g
[
" L  C3 v) V  M2 e+ z2 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% i% `+ N9 S2 h8 A/ U- f; Lset i9 A; h3 Q+ @: x- p( \* k
( i + 1)
$ v3 R4 v6 T* e( C4 n" @2 P
]
9 b% w7 |0 z8 w; _4 clet j 3; W  f, y! n  C, \, h3 P1 ?7 p! ^
let sum-money 08 H" V9 c6 x- B- w: a5 u& I
while[j < [trade-record-one-len] of myself]' O2 E# K! |' H1 |
[1 p% A8 |# ~, q% V4 w6 z1 f7 T
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)
/ l; {, T" p3 {set j
' t5 `4 t  {3 n/ P( j + 1)

3 M2 T& d& _: B$ g9 {( @2 x" G2 F; f' k]! `# i" B( x; A7 @9 }. {
let k 3
" c( j+ G$ u; b3 C" vlet power 0
( T6 h: c9 O; f) blet local 0
# L  c8 n, Y; @' J1 @5 |  Pwhile [k <[trade-record-one-len] of myself]+ u& k: {9 L9 q/ s! ^
[$ j9 u" M+ U! s3 m1 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)
: A) ~! g+ G3 X' h# Xset k (k + 1)8 ]& u9 u, F- E4 O
]
, a$ y) J7 t8 h. o/ O- [. Zset [local-reputation] of myself (local)
7 T. Y# h' F4 u% R1 ?6 B/ _end
) V; H& n/ Y/ @; R) x4 G% c& k8 h, X9 C( {: r" j! j2 e0 T
to update-neighbor-total
( ?2 L7 p8 C$ ]
0 t9 Y1 ^5 s% L- Z$ w# m1 i6 nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% V/ Q5 w7 `1 x  x# i
* J9 z4 W5 Q3 n! d- B% j

) C3 K8 Y' \" H1 x/ R& _) ]" wend
" W4 m9 ^. l9 v! A- Z; s  C. C5 Q0 ]' F" Q. Y
to update-credibility-ijl $ v% f, z0 }# m; T( P
& o! V  Z  e% ^: x8 R
;;
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。
% R) a2 x" F2 G# Slet l 0& `( G6 z7 C( P. \- b  v
while[ l < people ]* N. j6 I9 Q0 H6 ]
;;
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" d4 H) B" l
[9 z  _3 ]+ o  A) X: Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! d0 f; T+ }+ Z4 p& `8 eif (trade-record-one-j-l-len > 3)
& K2 Y; ~8 J" p[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
' r4 ~( P3 c- C6 Elet i 3* x7 P; ?% @: M# z' B
let sum-time 0# W0 q4 ^  U2 L8 ?9 X9 j: f$ q
while[i < trade-record-one-len]% F$ Y9 I1 L7 g8 p$ ^$ O
[
% C% R9 J4 z% q/ F# p6 i" aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: N; P6 ^+ G. _6 v1 z% Oset i6 e' @/ F4 I: \$ b
( i + 1)
5 W* f3 k3 t; Q( X
]! s: ]8 m0 N# M6 N0 u2 b# k
let credibility-i-j-l 0
# W" h2 @6 J# n; e' t6 t% t;;i
评价(jjl的评价): |9 d3 n) q% x1 ^" l, }* e( o
let j 3+ o; P" X3 g. e4 U' W8 ?/ ?- i
let k 4
) E" {. _5 {8 Mwhile[j < trade-record-one-len]
$ X; Z& o; c6 H) _0 O[
: x" p. z% Y' Fwhile [((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
. l6 e# B+ L5 `- Q" h% Hset 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)! C4 `9 n* m% s2 |
set j
1 F/ n: ?& w% C' `5 d( j + 1)
" q! P* X, Z& A9 }; }
]2 K' U1 `, H! C! _1 e) h
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 ))/ C1 g$ ?2 S" a8 C+ @
2 O( D4 H* Q: b
$ A- A6 u' i6 Y, Q6 S8 s- y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 s6 O$ A4 u8 I: I( H: @5 C' q; ^
;;
及时更新il的评价质量的评价
( o$ ~+ C2 c# N4 g; rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- B4 _, \1 M8 {$ t9 \" n6 cset l (l + 1)
8 g2 c/ b+ J4 A  `! F8 q, X7 X# \]
9 U# {+ l# _7 {2 A8 m. Zend
2 ~3 G6 F# s9 s
+ b1 [# L* d/ a1 l+ H0 O9 ato update-credibility-list
+ z+ O8 J/ s. D9 a- l3 s8 P/ olet i 0$ k) [0 b2 K7 x( C
while[i < people]
5 i5 Z6 A6 I8 B[
& {7 Q# \  r/ m2 i8 f. _9 w& wlet j 0
' i/ t* \' w4 e; e! R3 Clet note 0
" J, L/ n0 V1 d1 slet k 0
9 q6 Q( R. r' P- `' z8 `( O;;
计作出过评价的邻居节点的数目
1 Z: C" S2 y9 j" Fwhile[j < people]; F. s3 d$ F& I" }
[
" }- D" y* j# ]2 _0 Q1 Yif (item j( [credibility] of turtle (i + 1)) != -1)
8 ~4 ^5 f, T  h: K1 Y, A+ l. R;;
判断是否给本turtle的评价质量做出过评价的节点' F- E  G" A& H& }0 [; c
[set note (note + item j ([credibility]of turtle (i + 1)))
( J$ k: z" C+ m( h7 z% K;;*(exp (-(people - 2)))/(people - 2))]

  A: t& r5 q% A& i9 E/ @set k (k + 1)
5 ?) T1 K9 `% V3 t# p]- L2 m) t6 p1 c; k( Q( X' q
set j (j + 1)0 Z6 o) z7 F5 F) _7 W1 b! r; o
]
5 }* i/ R. C1 Vset note (note *(exp (- (1 / k)))/ k)3 k* s  U: [! ^. f% D: Z
set credibility-list (replace-item i credibility-list note)
4 S8 f, G2 ~( |: Fset i (i + 1)
8 E4 [. t6 V9 }6 G]
4 H5 U) y6 u0 M% G8 Zend
+ q2 \0 A6 O4 W! w9 ^; e1 z6 T
% v+ b; T- D" j2 M5 P8 w- u9 nto update-global-reputation-list
% \: \  Z% i' E4 {  Tlet j 0
, Q* B6 l3 \! l# Mwhile[j < people]% X5 [: |. X5 u; m# f1 q9 K- `
[
1 `, d$ ^) m3 p# a7 T; x) Slet new 0/ |. d4 X0 P% ]- N8 [
;;
暂存新的一个全局声誉
3 c. c5 m& f/ @" r- klet i 0
/ x  R  w0 B# O0 glet sum-money 0
$ F, J& Q- @9 ~* f' ~0 blet credibility-money 0
- ]2 ~, s+ j$ v6 L4 O; {while [i < people]
$ q8 w' V' p2 ~1 ~8 G9 H[
  s8 \* j  y5 Z) e4 mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 `( k- N/ A6 x$ Q8 m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: i8 f# x; R. c7 ?set i (i + 1)" [! t/ m7 K; L2 y
]
7 F" K: W, }; l" G( vlet k 0
; U! t' t* d8 z' U* Q  rlet new1 0
# i' V9 j3 g; d: X# ?. Fwhile [k < people]
6 }0 J6 ?8 P( @- R[4 ]8 B2 v* G; N6 N4 d
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)
& k  v- T, A+ ]9 r* }- k# \7 Lset k (k + 1)
5 R4 o. s6 @) r; I5 a0 A]$ c# F5 e# T0 B6 r" W9 B5 N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - D. |+ u# k9 u. E$ A
set global-reputation-list (replace-item j global-reputation-list new)4 m: w4 }- u* u; x4 a9 @% g
set j (j + 1)* U  g/ @2 y& e3 M
]
/ |4 S( E6 [. {8 n! I* Oend
/ c6 l1 ]% ?% e
! W- c6 @+ Z1 L  e  |  u7 {3 Z. G0 g

& [  e/ r, [+ E' pto get-color. Z8 l+ v1 {) v
! Z5 Z0 ^. T0 e$ F/ V' L3 Q
set color blue

9 p8 ]4 f/ [% w( e8 r2 y6 o$ C/ _3 V: [  Hend
& O6 ]" w3 |9 i. P8 B
1 s4 m8 t9 l9 T- U8 C" Hto poll-class' p, R$ S" _3 S  o% L7 F
end1 G' |5 @: Y0 a( }9 A1 S

$ U6 S4 M6 `: v6 t4 n+ Cto setup-plot1
& D) J+ n4 x4 E9 [+ W( K7 i6 f
9 L$ C+ C# |# E% Y) uset-current-plot "Trends-of-Local-reputation"

2 i5 U7 y& O6 H/ b* v8 c* w% p
- y2 {( ]7 b. l/ K& ~set-plot-x-range 0 xmax
9 N* @. s% ^0 @% k' w6 {$ X2 Z
3 u" S6 K! D/ Q( g3 D
set-plot-y-range 0.0 ymax
- ^9 A1 [8 X- O0 N2 R- W6 U
end
8 M" R0 ]: N" F# ]" M' M
) z# m6 ?% @. [' U1 q0 _4 Fto setup-plot21 S1 s# Q. ]4 X! n# ~; ]! r
/ o( y; x; G1 r
set-current-plot "Trends-of-global-reputation"

, M5 V6 l  W+ x& H' `
- f1 z0 c7 p$ d4 Zset-plot-x-range 0 xmax

) ^8 Q% o: G2 P  l0 O  e& s" H) A- R0 B$ J; s, S( E
set-plot-y-range 0.0 ymax
( U7 K' M: @% `( M; A, h% j% Q
end
; M; _, O+ ^# A0 j0 n1 t+ l( u% b2 t# y0 e
to setup-plot3
6 J* |( u1 m1 q, Q  _$ H( ?' y$ a% R# x2 P
set-current-plot "Trends-of-credibility"

) X# B  J% N" [) G1 C& E( s: ?6 J* O; B' P
set-plot-x-range 0 xmax
- g; B' L4 F* B* R: Y8 P

8 N6 F$ p" H2 Yset-plot-y-range 0.0 ymax
6 q: N+ b6 s* M, y) B, k  @
end
- Z/ s; q& Q. C$ H4 P, T' A! u6 G! k7 R
to do-plots' s! [6 V. X8 z- A
set-current-plot "Trends-of-Local-reputation"8 l4 r2 H1 d2 M
set-current-plot-pen "Honest service"5 m; w2 \+ M5 M
end
& Q% s3 D3 E- z
' t6 P& U, C2 v( g  b[ 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.( W0 H. `! v& R: K% V! z; s

, C" O0 G" b. p" t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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